US4758896A — 3-Dimensional integrated circuit for liquid cryst…

Claim 1

Independent Claim 171 words

An integrated circuit for a television receiver, comprising: a substrate; a plurality of layers of semiconductor material successively formed upon said substrate, each of said layers having a plurality of active and passive circuit elements formed therein; a plurality of layers of electrically insulating material respectively formed between mutually adjacent ones of said semiconductor layers; through-hole connecting means for interconnecting predetermined ones of said circuit elements formed in respectively different ones of said semiconductor layers, and; a liquid crystal display panel formed integrally upon said integrated circuit; said circuit elements of a first set of said semiconductor layers being interconnected to constitute a receiver circuit block for receiving a television signal and producing video and audio signals therefrom, and said circuit elements of a second set of said semiconductor layers being interconnected to constitute a display drive block coupled to receive said video signal, for producing liquid crystal display drive signals, said liquid crystal display drive signals being applied to said liquid crystal display panel to thereby produce a television image.

Claim 2

Dependent Claim 171 words

An integrated circuit for a television receiver, comprising: a substrate; a plurality of layers of semiconductor material successively formed upon said substrate, each of said layers having a plurality of active and passive circuit elements formed therein; a plurality of layers of electrically insulating material respectively formed between mutually adjacent ones of said semiconductor layers; through-hole connecting means for interconnecting predetermined ones of said circuit elements formed in respectively different ones of said semiconductor layers, and; a liquid crystal display panel formed integrally upon said integrated circuit; said circuit elements of a first set of said semiconductor layers being interconnected to constitute a receiver circuit block for receiving a television signal and producing video and audio signals therefrom, and said circuit elements of a second set of said semiconductor layers being interconnected to constitute a display drive block coupled to receive said video signal, for producing liquid crystal display drive signals, said liquid crystal display drive signals being applied to said liquid crystal display panel to thereby produce a television image.

Claim 3

Dependent Claim 74 words

An integrated circuit according to claim 1, in which said semiconductor layers of said receiver circuit block are disposed adjacent to said substrate and said semiconductor layers of said display drive block are disposed above said receiver circuit block semiconductor layers, and further comprising a first shield layer formed of an electrically conductive material and disposed between said semiconductor layers of said receiver circuit block and said semiconductor layers of said display drive block.

Claim 4

Dependent Claim 109 words

An integrated circuit according to claim 2, in which said receiver circuit block comprises at least a first semiconductor layer in which is formed a tuner circuit and a second semiconductor layer in which is formed a video and audio signal processing circuit comprising an intermediate frequency amplifier for producing an intermediate frequency signal from an output signal of said tuner circuit and video and audio circuits for respectively deriving video and audio signals from said intermediate frequency signal, and further comprising a second shield layer formed of an electrically conductive material, disposed between said semiconductor layers of said tuner circuit and said video and audio signal processing circuit.

Claim 5

Dependent Claim 16 words

An integrated circuit according to claim 3, in which said semiconductor layers are formed from silicon.

Claim 6

Dependent Claim 22 words

An integrated circuit according to claim 4, in which said semiconductor layer of said tuner circuit comprises an epitaxial layer of silicon.

Claim 7

Dependent Claim 32 words

An integrated circuit according to claim 5, in which said epitaxial layer of silicon is formed directly upon said substrate, and in which said substrate is formed of an electrically insulating material.

Claim 8

Dependent Claim 14 words

An integrated circuit according to claim 6, in which said substrate material is sapphire.

Claim 9

Dependent Claim 33 words

An integrated circuit according to claim 5, in which said epitaxial layer of silicon is manufactured by thermal processing of a layer of polycrystalline silicon to perform recrystallization of said polycrystalline silicon layer.

Claim 10

Dependent Claim 24 words

An integrated circuit according to claim 1, in which at least one of said semiconductor layers of said display drive block comprises polycrystalline silicon.

Claim 11

Dependent Claim 24 words

An integrated circuit according to claim 3, in which said semiconductor layer of said tuner circuit comprises an epitaxial layer of a chemical compound

Claim 12

Dependent Claim 15 words

An integrated circuit according to claim 10, in which said substrate is formed of silicon.

Claim 13

Dependent Claim 15 words

An integrated circuit according to claim 10 in which said chemical compound is gallium arsenide.

Claim 14

Dependent Claim 24 words

An integrated circuit according to claim 12, and further comprising a layer of germanium upon which is formed said epitaxial layer of gallium arsenide.

Claim 15

Dependent Claim 33 words

An integrated circuit according to claim 13, in which said layer of germanium is formed directly upon said substrate, and further comprising a layer of strontium fluoride formed upon said gallium arsenide layer.

Claim 16

Dependent Claim 45 words

An integrated circuit according to claim 13, and further comprising a layer of silicon dioxide formed as one of said insulating layers, and a layer of strontium fluoride formed upon said silicon dioxide layer, with said germanium layer being formed upon said strontium fluoride layer.

Claim 17

Dependent Claim 34 words

An integrated circuit according to claim 3, and further comprising at least one semiconductor layer in which is formed at least one stabilized power supply circuit for producing a stabilized voltage or current supply.

Claim 18

Dependent Claim 26 words

An integrated circuit according to claim 16, in which said stabilized power supply circuit semiconductor layer is disposed closely adjacent to said tuner circuit semiconductor layer.

Claim 19

Dependent Claim 38 words

An integrated circuit according to claim 2, in which an electrode pattern constituting an array of drive electrodes for respective drive elements of said liquid crystal display panel is formed upon an uppermost surface of said integrated circuit.

Claim 20

Dependent Claim 39 words

An integrated circuit according to claim 18, in which said electrode pattern is configured such as to function as a rear reflector of said liquid crystal display panel for reflecting incident light outward through said liquid crystal display panel.

Claim 21

Dependent Claim 62 words

An integrated circuit according to claim 18, in which said uppermost surface is a surface of the uppermost of said successively superimposed layers of semiconductor material, and in which a matrix array of active circuit elements is formed in said uppermost semiconductor layer, said active circuit elements respectively functioning as control elements for corresponding display elements of said liquid crystal display panel.

Claim 22

Dependent Claim 65 words

An integrated circuit according to claim 3, and further comprising an acoustic surface wave element layer having at least one elastic surface wave element formed therein to function as an intermediate frequency filter, with input and output terminals of said acoustic surface wave element being respectively coupled to an output terminal of said tuner circuit and an input terminal of said intermediate frequency amplifier circuit.

Claim 23

Dependent Claim 33 words

An integrated circuit according to claim 21, in which said acoustic surface wave element layer comprises a thin layer of piezoelectric material of specifically determined thickness formed upon a layer of non-piezoelectric material.

Claim 24

Dependent Claim 34 words

An integrated circuit according to claim 21, in which said acoustic surface wave element layer comprises a thin layer of piezoelectric material of specifically determined thickness formed upon a substrate composed of non-piezoelectric material.

Claim 25

Dependent Claim 34 words

An integrated circuit according to claim 22 in which said piezoelectric material is selected from a group of materials which includes aluminum nitride and zinc oxide, and in which said non-piezoelectric material is silicon.

Claim 26

Dependent Claim 33 words

An integrated circuit according to claim 21, in which said acoustic surface wave element layer is formed between said tuner circuit semiconductor layer and said video and audio signal processing circuit semiconductor layer.

Claim 27

Dependent Claim 37 words

An integrated circuit according to claim 21, in which said acoustic surface wave element layer is formed upon said substrate and in which said tuner circuit semiconductor layer is formed upon said acoustic surface wave element layer.

Claim 28

Dependent Claim 28 words

An integrated circuit according to claim 2, in which said shield layer is constituted by a layer of a semiconductor material having a substantially high density of carriers.

Claim 29

Dependent Claim 20 words

An integrated circuit according to claim 2, in which said shield layer is constituted by a layer of a metal.

Claim 30

Dependent Claim 21 words

An integrated circuit according to claim 28, in which said metal is selected from a group which includes molybdenum and tungsten.

Claim 31

Dependent Claim 21 words

An integrated circuit according to claim 2, in which said shield layer is constituted by a layer of a silicide compound.

Claim 32

Dependent Claim 15 words

An integrated circuit according to claim 30, in which said silicide compound is molybdenum silicide.

Claim 33

Dependent Claim 25 words

An integrated circuit according to claim 22 and further comprising a layer of quartz formed between said layer of piezoelectric material and said non-piezoelectric material.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-07-19	1992-01-18	1992-07-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-07-19	1996-01-18	1996-07-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-07-19	2000-01-18	2000-07-19	$7700.00	Window Closed / Lapsed

3-Dimensional integrated circuit for liquid crystal display TV receiver

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