US5270969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically programmable nonvolatile semiconductor memory device with nand cell structure
Assignee: Toshiba Corp
•
Filing: 1992-07-15
•
Granted: 1993-12-14
•
Expires: 2012-07-15
Abstract
Abstract The current paths of a plurality of floating gate type MOSFETs are series-connected to form a series circuit. The series circuit is connected at one end to receive a reference voltage, and is connected to data programming and readout circuits. In the data programming mode, electrons are discharged from the floating gate to the drain of the MOSFET or holes are injected into the drain into the floating gate. The data readout operation is effected by checking whether current flows from the other end to the one end of the series circuit or not.
Inventors
- 👤 Hiroshi Iwahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:56
CPC Classifications
G; G11; G11C; G11C16/00; G11C16/02; G11C16/06; G11C16/10; G11C11/00; G11C11/56; G11C11/5621; G11C11/5628; G11C11/5642; G11C16/04; G11C16/0483; G11C16/08; G11C16/12; G11C16/26; G11C16/30
Claims Analysis
Total Claims: 139
Claim 1
Independent Claim
314 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a second logic level.
Claim 2
Dependent Claim
314 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a second logic level.
Claim 3
Dependent Claim
322 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the tunnel insulation film into the floating gate by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the tunnel insulation film from the floating gate by the data programming means when the stored data of the data latching means is a second logic level.
Claim 4
Dependent Claim
322 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the tunnel insulation film into the floating gate by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the tunnel insulation film from the floating gate by the data programming means when the stored data of the data latching means is a second logic level.
Claim 5
Dependent Claim
333 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film on the entire channel region into the floating gate by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film on the entire channel region from the floating gate by the data programming means when the stored data of the data latching means is a second logic level.
Claim 6
Dependent Claim
333 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film on the entire channel region into the floating gate by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film on the entire channel region from the floating gate by the data programming means when the stored data of the data latching means is a second logic level.
Claim 7
Dependent Claim
334 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for selecting one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the data latching means is a second logic level.
Claim 8
Dependent Claim
334 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for selecting one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the data latching means is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the data latching means is a second logic level.
Claim 9
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 3, wherein the insulation film is formed uniformly on the channel region.
Claim 10
Dependent Claim
45 words
A nonvolatile semiconductor memory device according to any one of claims 1 to 5, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, gates of the selection transistors being connected to one of the row lines.
Claim 11
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 1 to 5, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 12
Dependent Claim
232 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal.
Claim 13
Dependent Claim
232 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal.
Claim 14
Dependent Claim
79 words
A nonvolatile semiconductor memory device according to claim 8, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 15
Dependent Claim
248 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal.
Claim 16
Dependent Claim
248 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal.
Claim 17
Dependent Claim
79 words
A nonvolatile semiconductor memory device according to claim 10, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 18
Dependent Claim
274 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selecting means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate and emitting electrons from the floating gate.
Claim 19
Dependent Claim
274 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selecting means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate and emitting electrons from the floating gate.
Claim 20
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 21
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, said data programming means programming the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 22
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 2, wherein the insulation film is formed uniformly on the channel region.
Claim 23
Dependent Claim
45 words
A nonvolatile semiconductor memory device according to any one of claims 10 to 13, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, gates of the selection transistors being connected to one of the row lines.
Claim 24
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 10 to 13, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 25
Dependent Claim
48 words
A nonvolatile semiconductor memory device according to any one of claims 10 to 13, further comprising data latching means for storing data and connected to said column lines, and said data programming means programs the cell transistors in response to the data stored in said data latching means.
Claim 26
Dependent Claim
50 words
A nonvolatile semiconductor memory device according to any one of claims 10 to 13, further comprising data latching means for storing data and connected to said column lines, and said data programming means programs the cell transistors such that data stored therein corresponds to data latched in said latching means.
Claim 27
Dependent Claim
277 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively programming data into the cell transistors; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 28
Dependent Claim
277 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively programming data into the cell transistors; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 29
Dependent Claim
32 words
A nonvolatile semiconductor memory device according to claim 19, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate and emitting electrons from the floating gate.
Claim 30
Dependent Claim
363 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 31
Dependent Claim
363 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 32
Dependent Claim
352 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column line, the control gate of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 33
Dependent Claim
352 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column line, the control gate of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 34
Dependent Claim
385 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 35
Dependent Claim
385 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 36
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 22, wherein the insulation film is formed uniformly on the channel region.
Claim 37
Dependent Claim
365 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively programming data into the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 38
Dependent Claim
365 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively programming data into the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 39
Dependent Claim
373 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 40
Dependent Claim
373 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 41
Dependent Claim
359 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column line, the control gate of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film on the entire channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film on the entire channel region by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for selecting one of the column lines in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 42
Dependent Claim
359 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column line, the control gate of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film on the entire channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film on the entire channel region by the data programming means when the stored data of the cell transistor is a second logic level; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for selecting one of the column lines in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 43
Dependent Claim
337 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for selecting one of the column lines in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region.
Claim 44
Dependent Claim
337 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; column selection means for selecting one of the column lines in response to a column selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region.
Claim 45
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 27, wherein the insulation film is formed uniformly on the channel region.
Claim 46
Dependent Claim
292 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors.
Claim 47
Dependent Claim
292 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors.
Claim 48
Dependent Claim
87 words
A nonvolatile semiconductor memory device according to claim 30, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 49
Dependent Claim
398 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 50
Dependent Claim
398 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 51
Dependent Claim
400 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film formed on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 52
Dependent Claim
400 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film formed on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 53
Dependent Claim
400 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 54
Dependent Claim
400 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 55
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 33, wherein the insulation film is formed uniformly on the channel region.
Claim 56
Dependent Claim
333 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistor in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film by utilizing a tunnel effect, and emitting electrons from the floating gate through the insulation film by utilizing a tunnel effect.
Claim 57
Dependent Claim
333 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistor in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film by utilizing a tunnel effect, and emitting electrons from the floating gate through the insulation film by utilizing a tunnel effect.
Claim 58
Dependent Claim
397 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of columns of the memory cells in response to a column selecting signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 59
Dependent Claim
397 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region, and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means; column selection means for designating one of columns of the memory cells in response to a column selecting signal; and data programming means for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 60
Dependent Claim
123 words
A nonvolatile semiconductor memory device according to any one of claim 30 to 37, wherein the first row selection means includes decoding means and switching means, one end of the switching means is connected to the decoding means through a signal line and the other end of the switching means is connected to the cell transistor through the first row line, the switching means is controlled by the signal supplied from the second row selection means, the switching means connects the decoding means and the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the selected second row line, in response to the signal supplied from the second row selection means.
Claim 61
Dependent Claim
39 words
A nonvolatile semiconductor memory device according to claim 38, wherein the signal line comprises a first aluminum layer, and a signal for selecting the second row line is applied through a second signal line comprising a second aluminum layer.
Claim 62
Dependent Claim
43 words
A nonvolatile semiconductor memory device according to claim 38, further comprising data latching means for storing data and connected to said column lines, wherein the cell transistor is programmed in accordance with data corresponding to the data stored in said data latching means.
Claim 63
Dependent Claim
305 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 64
Dependent Claim
305 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 65
Dependent Claim
313 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 66
Dependent Claim
313 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the tunnel insulation film by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 67
Dependent Claim
323 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 68
Dependent Claim
323 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 69
Dependent Claim
334 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charge stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 70
Dependent Claim
334 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising a plurality of memory cell blocks each including memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charge stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors, wherein a desired one of the memory cell blocks is programmed by the data programming means, and the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 71
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 43, wherein the insulation film is formed uniformly on the channel region.
Claim 72
Dependent Claim
46 words
A nonvolatile semiconductor memory device according to any one of claims 41 to 44, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, the gates of the selection transistors being connected to one of the row lines.
Claim 73
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 41 to 44, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 74
Dependent Claim
263 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film by utilizing a tunnel effect, and emitting electrons from the floating gate through the insulation film by utilizing a tunnel effect, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 75
Dependent Claim
263 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film by utilizing a tunnel effect, and emitting electrons from the floating gate through the insulation film by utilizing a tunnel effect, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 76
Dependent Claim
271 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the tunnel insulation film, and emitting electrons from the floating gate through the tunnel insulation film, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 77
Dependent Claim
271 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the tunnel insulation film, and emitting electrons from the floating gate through the tunnel insulation film, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 78
Dependent Claim
282 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix from having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film on the entire channel region, and emitting electrons from the floating gate through the insulation film on the entire channel region, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 79
Dependent Claim
282 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix from having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film on the entire channel region, and emitting electrons from the floating gate through the insulation film on the entire channel region, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 80
Dependent Claim
285 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulating film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 81
Dependent Claim
285 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulating film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means connected to the first terminals of the memory cells, for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region, and a threshold voltage of a cell transistor, in which data has not been programmed and of which a floating gate is an intrinsic state, is approximately 0 volts.
Claim 82
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 50, wherein the insulation film is formed uniformly on the channel region.
Claim 83
Dependent Claim
46 words
A nonvolatile semiconductor memory device according to any one of claims 48 to 51, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, the gates of the selection transistors being connected to one of the row lines.
Claim 84
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 48 to 51, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 85
Dependent Claim
265 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons through the insulation film into the floating gate by utilizing a tunnel effect by setting the control gate at a potential higher than that of the channel region, and of emitting electrons through the insulation film from the floating gate by utilizing a tunnel effect by setting the control gate at a potential lower than that of the channel region.
Claim 86
Dependent Claim
265 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons through the insulation film into the floating gate by utilizing a tunnel effect by setting the control gate at a potential higher than that of the channel region, and of emitting electrons through the insulation film from the floating gate by utilizing a tunnel effect by setting the control gate at a potential lower than that of the channel region.
Claim 87
Dependent Claim
273 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for selecting one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected memory cell is programmed by one of injecting electrons into the floating gate through the tunnel insulation film by setting the control gate at a potential higher than that of the channel region, and of emitting, electrons from the floating gate through the tunnel insulation film by setting the control gate at a potential lower than that of the channel region.
Claim 88
Dependent Claim
273 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for selecting one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected memory cell is programmed by one of injecting electrons into the floating gate through the tunnel insulation film by setting the control gate at a potential higher than that of the channel region, and of emitting, electrons from the floating gate through the tunnel insulation film by setting the control gate at a potential lower than that of the channel region.
Claim 89
Dependent Claim
282 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of rows of the memory cells in response to a row selection signal; column selection circuit for designating one of columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film on the entire channel region by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate through the insulation film on the entire channel region by setting the control gate at a potential lower than that of the channel region.
Claim 90
Dependent Claim
282 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of rows of the memory cells in response to a row selection signal; column selection circuit for designating one of columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate through the insulation film on the entire channel region by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate through the insulation film on the entire channel region by setting the control gate at a potential lower than that of the channel region.
Claim 91
Dependent Claim
247 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region.
Claim 92
Dependent Claim
247 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein a selected cell transistor is programmed by one of injecting electrons into the floating gate by setting the control gate at a potential higher than that of the channel region, and of emitting electrons from the floating gate by setting the control gate at a potential lower than that of the channel region.
Claim 93
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 57, wherein the insulation film is formed uniformly on the channel region.
Claim 94
Dependent Claim
46 words
A nonvolatile semiconductor memory device according to any one of claims 55 to 58, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, the gates of the selection transistors being connected to one of the row lines.
Claim 95
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 55 to 58, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 96
Dependent Claim
311 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 97
Dependent Claim
311 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 98
Dependent Claim
319 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for selecting one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the tunnel insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the tunnel insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 99
Dependent Claim
319 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and a tunnel insulation film including a portion having a thickness sufficient to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for selecting one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the tunnel insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the tunnel insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 100
Dependent Claim
330 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film on the entire channel region into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film on the entire channel region from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 101
Dependent Claim
330 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film on the entire channel region, the insulation film being thin enough to allow an electron tunnel effect to occur between the channel region and the floating gate, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film on the entire channel region into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film on the entire channel region from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 102
Dependent Claim
301 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 103
Dependent Claim
301 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection circuit for designating one of the rows of the memory cells in response to a row selection signal; column selection circuit for designating one of the columns of the memory cells in response to a column selection signal; and data programming circuit for selectively storing data in the cell transistors, wherein the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by setting the control gate at a potential higher than that of the channel region by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by setting the control gate at a potential lower than that of the channel region by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 104
Dependent Claim
20 words
A nonvolatile semiconductor memory device according to claim 64, wherein the insulation film is formed uniformly on the channel region.
Claim 105
Dependent Claim
46 words
A nonvolatile semiconductor memory device according to any one of claims 60 to 65, further comprising selection transistors respectively inserted between the first terminals of the memory cells and the column lines, the gates of the selection transistors being connected to one of the row lines
Claim 106
Dependent Claim
49 words
A nonvolatile semiconductor memory device according to any one of claims 60 to 65, further comprising switching means respectively inserted between the second terminals of the memory cells and the reference potential, and controlled so as to be in an off state when the data programming means stores data.
Claim 107
Dependent Claim
218 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, and the selection transistor having a gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 108
Dependent Claim
218 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell being located between a first terminal and a second terminal and including cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, and the selection transistor having a gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gate of the selection transistor is connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal; and switching means connected between the row selection means and the first row line, for controlling the first row line for selecting the cell transistor which is included in the memory cell including the selection transistor connected to the second row line, in response to a signal for controlling the second row line connected to the selection transistor included in the same memory cell.
Claim 109
Dependent Claim
230 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell including cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the gates of the cell transistors in the same row being commonly connected to one of the first row lines, and the gate of the selection transistor being connected to one of the second row lines; and row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means.
Claim 110
Dependent Claim
230 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines, and column lines, each memory cell including cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the gates of the cell transistors in the same row being commonly connected to one of the first row lines, and the gate of the selection transistor being connected to one of the second row lines; and row selection means including first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, wherein the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means controlled by the signal supplied from the second row selection means.
Claim 111
Dependent Claim
314 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data and connected to each of the column lines; and data programming means for simultaneously programming, in a plurality of cell transistors connected to one of the row lines, data corresponding to the data stored in the data latching means, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 112
Dependent Claim
314 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data and connected to each of the column lines; and data programming means for simultaneously programming, in a plurality of cell transistors connected to one of the row lines, data corresponding to the data stored in the data latching means, wherein the cell transistor holds an injected state of electrons which are injected into the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a first logic level, and the cell transistor holds an emitted state of electrons which are emitted from the floating gate through the insulation film by utilizing a tunnel effect by the data programming means when the stored data of the cell transistor is a second logic level.
Claim 113
Dependent Claim
344 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gates of the selection transistors in the same row are commonly connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal, wherein the row selection means includes first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for simultaneously programming, in a plurality of cell transistors connected to one of the first row lines, data corresponding to the data stored in the data latching means.
Claim 114
Dependent Claim
344 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gates of the selection transistors in the same row are commonly connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal, wherein the row selection means includes first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for simultaneously programming, in a plurality of cell transistors connected to one of the first row lines, data corresponding to the data stored in the data latching means.
Claim 115
Dependent Claim
53 words
A nonvolatile semiconductor memory device according to one of claims 71 and 72, wherein said data programming means programs the cell transistors of each memory cell sequentially from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal.
Claim 116
Dependent Claim
231 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for programming data of a first logic level in the cell transistors of the memory cells, and for selectively programming data of a second logic level in the cell transistors by utilizing an electron tunnel effect to occur between the channel region and the floating gate.
Claim 117
Dependent Claim
231 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors connected in series, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; and data programming means for programming data of a first logic level in the cell transistors of the memory cells, and for selectively programming data of a second logic level in the cell transistors by utilizing an electron tunnel effect to occur between the channel region and the floating gate.
Claim 118
Dependent Claim
23 words
A nonvolatile semiconductor memory device according to claim 74, further comprising data latching means for storing data and connected to said column lines.
Claim 119
Dependent Claim
40 words
A nonvolatile semiconductor memory device according to claim 75, wherein the data of the second logic level is selectively programmed into the cell transistors in response to the stored data of the data latching means by the data programming means.
Claim 120
Dependent Claim
380 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gates of the selection transistors in the same row are commonly connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal, wherein the row selection means includes first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for programming data into the cell transistors, wherein data is programmed into the cell transistor by utilizing a tunnel effect occurring between the channel region and the floating gate through the insulation film, data of a first logic level is programmed into the cell transistors of the memory cells, and then data of a second logic level is selectively programmed into the cell transistors.
Claim 121
Dependent Claim
380 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first row lines, second row lines and column lines, each memory cell being constituted between a first terminal and a second terminal by cell transistors connected in series and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected to one of the column lines, the control gates of the cell transistors in the same row are commonly connected to one of the first row lines, and the gates of the selection transistors in the same row are commonly connected to one of the second row lines; row selection means for selecting one of the first row lines and one of the second row lines in response to a row selection signal, wherein the row selection means includes first row selection means for selecting one of the first row lines and second row selection means for selecting one of the second row lines, the first row selection means is controlled by a signal supplied from the second row selection means, and when one of the second row lines is selected by the second row selection means, one of the first row lines which is associated with the memory cell connected to the selected second row line is selected by the first row selection means; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data, connected to each of the column lines; and data programming means for programming data into the cell transistors, wherein data is programmed into the cell transistor by utilizing a tunnel effect occurring between the channel region and the floating gate through the insulation film, data of a first logic level is programmed into the cell transistors of the memory cells, and then data of a second logic level is selectively programmed into the cell transistors.
Claim 122
Dependent Claim
23 words
A nonvolatile semiconductor memory device according to claim 77, further comprising data latching means for storing data and connected to the column lines.
Claim 123
Dependent Claim
40 words
A nonvolatile semiconductor memory device according to claim 78, wherein the data of the second logic level is selectively programmed into the cell transistors in response to the stored data of the data latching means by the data programming means.
Claim 124
Dependent Claim
65 words
A nonvolatile semiconductor memory device according to one of claims 74 and 77, wherein the data of the second logic level is programmed in the cell transistors of each memory cell sequentially and selectively from one of the cell transistors which is closest to the second terminal toward one of the cell transistors which is closest to the first terminal by the data programming means.
Claim 125
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; selection transistors respectively inserted between the first terminals of the memory cells and the column lines, gates of the selection transistors being connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data and connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a first logic level, the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a second logic level.
Claim 126
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and row lines and column lines, each memory cell including cell transistors, and each of the cell transistors having a control gate, a floating gate, a channel region, and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, each memory cell having a first terminal and a second terminal, the first terminals of the memory cells in the same column being commonly connected to one of the column lines, the second terminals of the memory cells being connected to a reference potential, and the control gates of the cell transistors in the same row being commonly connected to one of the row lines; selection transistors respectively inserted between the first terminals of the memory cells and the column lines, gates of the selection transistors being connected to one of the row lines; row selection means for designating one of the rows of the memory cells in response to a row selection signal; column selection means for designating one of the columns of the memory cells in response to a column selection signal; data latching means for storing data and connected to each of the column lines; and data programming means for selectively programming the cell transistors, wherein a selected cell transistor is programmed in accordance with data corresponding to the stored data of the data latching means, the cell transistor holds an injected state of electrons which are injected through the insulation film into the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a first logic level, the cell transistor holds an emitted state of electrons which are emitted through the insulation film from the floating gate by utilizing a tunnel effect by the data programming means when the stored data of the data latching means is a second logic level.
Claim 127
Dependent Claim
245 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected, the control gates of the cell transistors in the same row are commonly connected and form the first row, and the gates of the selection transistors in the same row are commonly connected and form the second row; data programming means for selectively programming data into the cell transistors; row selection means for designating one of the first rows and one of the second rows in response to a row selection signal; a column selection means for designating one of the columns in response to a column selection signal; and switching means connected between the row selection means and the first row, for controlling a potential level of the first row for designating the cell transistor in response to a signal for controlling the second row connected to the selection transistor included in the same memory cell.
Claim 128
Dependent Claim
245 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, and each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, wherein the first terminals of the memory cells in the same column are commonly connected, the control gates of the cell transistors in the same row are commonly connected and form the first row, and the gates of the selection transistors in the same row are commonly connected and form the second row; data programming means for selectively programming data into the cell transistors; row selection means for designating one of the first rows and one of the second rows in response to a row selection signal; a column selection means for designating one of the columns in response to a column selection signal; and switching means connected between the row selection means and the first row, for controlling a potential level of the first row for designating the cell transistor in response to a signal for controlling the second row connected to the selection transistor included in the same memory cell.
Claim 129
Dependent Claim
206 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, wherein the first terminals of the memory cells in the same column are commonly connected, the gates of the cell transistors in the same row are commonly connected and form the first row, and the gates of the selection transistors in the same row are commonly connected and form the second row; row selection means for designating one of the first rows and one of the second rows in response to a row selection signal; column selection means for designating one of the columns in response to a column selection signal; and switching means connected between the row selection means and the first row, for controlling a potential level of the first row for designating the cell transistor in response to a signal for controlling the second row connected to the selection transistor included in the same memory cell.
Claim 130
Dependent Claim
206 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, wherein the first terminals of the memory cells in the same column are commonly connected, the gates of the cell transistors in the same row are commonly connected and form the first row, and the gates of the selection transistors in the same row are commonly connected and form the second row; row selection means for designating one of the first rows and one of the second rows in response to a row selection signal; column selection means for designating one of the columns in response to a column selection signal; and switching means connected between the row selection means and the first row, for controlling a potential level of the first row for designating the cell transistor in response to a signal for controlling the second row connected to the selection transistor included in the same memory cell.
Claim 131
Dependent Claim
250 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, the first terminals of the memory cells in the same column being commonly connected, the control gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; row selection means including first row selection means for designating the first row and second row selection means for designating the second row, wherein the first row selection means is coupled to the second row selection means, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; column selection means for designating one of the columns in response to a column selection signal; and data programming means for selectively programming data into the cell transistors.
Claim 132
Dependent Claim
250 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, the first terminals of the memory cells in the same column being commonly connected, the control gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; row selection means including first row selection means for designating the first row and second row selection means for designating the second row, wherein the first row selection means is coupled to the second row selection means, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; column selection means for designating one of the columns in response to a column selection signal; and data programming means for selectively programming data into the cell transistors.
Claim 133
Dependent Claim
211 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, the first terminals of the memory cells in the same column being commonly connected, the gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; row selection means including first row selection means for designating the first row and second row selection means for designating the second row, wherein the first row selection means is coupled to the second row selection means, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; and column selection means for designating the column in response to a column selection signal.
Claim 134
Dependent Claim
211 words
A nonvolatile semiconductor memory device comprising: a memory cell array comprising memory cells arranged in matrix form having rows and columns and first rows, second rows and columns, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, the first terminals of the memory cells in the same column being commonly connected, the gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; row selection means including first row selection means for designating the first row and second row selection means for designating the second row, wherein the first row selection means is coupled to the second row selection means, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; and column selection means for designating the column in response to a column selection signal.
Claim 135
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a plurality of memory cells arranged in matrix array of rows and columns, each of the rows having first and second rows, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, the first terminals of the memory cells in the same column being commonly connected, the control gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; first row selection means for designating the first row, including decoding means and a plurality of switching means, each of the switching means having a first end and a second end, the first end of the switching means being coupled to the first row, and a signal line being commonly coupled to a corresponding one of the second ends of the switching means coupled to the respective first rows of each of the rows, wherein the second end of the switching means is coupled to the decoding means through the signal line; second row selection means for designating the second row, the second row selection means being coupled to the first row selection means, a signal supplied from the second row selection means controlling the first row selection signal, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; column selection means for designating the column in response to a column selection signal; and data programming means for selectively programming data into the cell transistors.
Claim 136
Dependent Claim
340 words
A nonvolatile semiconductor memory device comprising: a plurality of memory cells arranged in matrix array of rows and columns, each of the rows having first and second rows, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a control gate, a floating gate, a channel region and an insulation film between the floating gate and the channel region, for electrically storing data by using charges stored in the floating gate, the first terminals of the memory cells in the same column being commonly connected, the control gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; first row selection means for designating the first row, including decoding means and a plurality of switching means, each of the switching means having a first end and a second end, the first end of the switching means being coupled to the first row, and a signal line being commonly coupled to a corresponding one of the second ends of the switching means coupled to the respective first rows of each of the rows, wherein the second end of the switching means is coupled to the decoding means through the signal line; second row selection means for designating the second row, the second row selection means being coupled to the first row selection means, a signal supplied from the second row selection means controlling the first row selection signal, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; column selection means for designating the column in response to a column selection signal; and data programming means for selectively programming data into the cell transistors.
Claim 137
Dependent Claim
303 words
A nonvolatile semiconductor memory device comprising: a plurality of memory cells arranged in matrix array of rows and columns, each of the rows having first and second rows, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, the first terminals of the memory cells in the same column being commonly connected, the gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; first row selection means for designating the first row, including decoding means and a plurality of switching means, each of the switching means having a first end and a second end, the first end of the switching means being coupled to the first row, and a signal line being commonly connected to a corresponding one of the second ends of the switching means coupled to the respective first rows of each of the rows, wherein the second end of the switching means is coupled to the decoding means through the signal line; second row selection means for designating the second row, the second row selection means being coupled to the first row selection means, a signal supplied from the second row selection means controlling the first row selection signal, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; and column selection means for designating the column in response to a column selection signal.
Claim 138
Dependent Claim
303 words
A nonvolatile semiconductor memory device comprising: a plurality of memory cells arranged in matrix array of rows and columns, each of the rows having first and second rows, each memory cell being constituted between a first terminal and a second terminal by cell transistors and a selection transistor for selecting the memory cell, each of the cell transistors having a gate, the selection transistor having a gate, the first terminals of the memory cells in the same column being commonly connected, the gates of the cell transistors in the same row being commonly connected and forming the first row, and the gates of the selection transistors in the same row being commonly connected and forming the second row; first row selection means for designating the first row, including decoding means and a plurality of switching means, each of the switching means having a first end and a second end, the first end of the switching means being coupled to the first row, and a signal line being commonly connected to a corresponding one of the second ends of the switching means coupled to the respective first rows of each of the rows, wherein the second end of the switching means is coupled to the decoding means through the signal line; second row selection means for designating the second row, the second row selection means being coupled to the first row selection means, a signal supplied from the second row selection means controlling the first row selection signal, and when one of the second rows is selected by the second row selection means, one of the first row which is associated with the memory cell connected to the selected second row is selected by the first row selection means; and column selection means for designating the column in response to a column selection signal.
Claim 139
Dependent Claim
58 words
A nonvolatile semiconductor memory device according to one of claims 86 and 87, wherein the switching means of the first row selection means is controlled by the signal supplied from the second row selection means, the switching means connects the deciding means of the first row selection means and the first row line for selecting the cell transistor.
References Cited (Backward Citations)
US4233526A
Cited
JPS53148256A
Cited
US4099196A
Cited
US4203158A
Cited
US4203158B1
Cited
US4467453A
Cited
JPS5771587A
Cited
US4500975A
Cited
WO1984002800A2
Cited
JPS60182162A
Cited
US4580247A
Cited
US4648074A
Cited
US5008856A
Cited
US5148394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |