US4651016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state image sensor provided with a bipolar transistor and an MOS transistor
Assignee: Mitsubishi Electric Corp
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Filing: 1984-06-14
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Granted: 1987-03-17
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Expires: 2004-06-14
Abstract
Abstract A signal photoelectrically transduced by a photodiode PD is amplified by a transistor TR A and then read out by a MOS transistor TR S .
Inventors
- 👤 Tadashi Hirao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:04
CPC Classifications
H; H10; H10F; H10F39/00; H10F39/10; H10F39/12; H10F39/197; H10F39/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A solid-state image sensor comprising: a photoelectric transducing portion in which a charge is stored according to incident light, including an n + -p photodiode; signal reading means for reading the charge stored in said photoelectric transducing portion as a photoelectrically transduced signal, and a pnp amplifying transistor interposed between said photoelectric transducing portion and said signal reading means for receiving directly a photoelectrically transduced signal read out from said photoelectric transducing portion so as to amplify said photoelectrically transduced signal, said amplifying transistor having a base connected to a cathode of said n + -p photodiode, a collector connected to an anode of said n + -p photodiode and an emitter connected to said signal reading means.
Claim 2
Dependent Claim
118 words
A solid-state image sensor comprising: a photoelectric transducing portion in which a charge is stored according to incident light, including an n + -p photodiode; signal reading means for reading the charge stored in said photoelectric transducing portion as a photoelectrically transduced signal, and a pnp amplifying transistor interposed between said photoelectric transducing portion and said signal reading means for receiving directly a photoelectrically transduced signal read out from said photoelectric transducing portion so as to amplify said photoelectrically transduced signal, said amplifying transistor having a base connected to a cathode of said n + -p photodiode, a collector connected to an anode of said n + -p photodiode and an emitter connected to said signal reading means.
Claim 3
Dependent Claim
20 words
A solid-state image sensor in accordance with claim 1, wherein said PNP amplifying transistor is a transistor of vertical structure.
Claim 4
Dependent Claim
30 words
A solid-state image sensor as recited in claim 1 wherein said collector of said pnp amplifying transistor and the anode of said photodiode are formed in a common p-type layer.
Claim 5
Dependent Claim
30 words
A solid-state image sensor as recited in claim 2 wherein said collector of said pnp amplifying transistor and the anode of said photodiode are formed in a common p-type layer.
Claim 6
Dependent Claim
30 words
A solid-state image sensor as recited in claim 1 wherein the base of said amplifying pnp transistor comprises an n-type region abutting the n + cathode region of the photodiode.
Claim 7
Dependent Claim
30 words
A solid-state image sensor as recited in claim 4 wherein the base of said amplifying pnp transistor comprises an n-type region abutting the n + cathode rtion of the photodiode.
Claim 8
Dependent Claim
35 words
A solid-state image senor as recited in claim 1 wherein said signal reading means comprises an n-type region to which the p-type emitter region of the pnp amplifying transistor is connected by a metallic portion.
Claim 9
Dependent Claim
35 words
A solid-state image sensor as recited in claim 6 wherein said signal reading means comprises an n-type region to which the p-type emitter region of the pnp amplifying transistor is connected by a metallic portion.
References Cited (Backward Citations)
US4407010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |