Patent US5377031A successfully refreshed from Google Patents.
US5377031A
Expired / Lapsed
US
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Single crystal silicon tiles for liquid crystal display panels including light shielding layers
Assignee: Kopin Corp
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Filing: 1993-08-18
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Granted: 1994-12-27
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Expires: 2013-08-18
Abstract
Abstract The invention relates to the formation of arrays of thin film transistors (TFT's) on silicon substrates and the dicing and tiling of such substrates for transfer to a common module body. TFT's activate display electrodes formed adjacent the transistors after the tiles have been transferred. The invention can be used in a liquid crystal display and may include one or more light shielding layers.
Inventors
- 👤 Duy-Phach Vu
- 👤 Brenda D. Dingle
- 👤 Jason E. Dingle
- 👤 Ngwe Cheong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:13
CPC Classifications
H; H10; H10D; H10D86/00; H10D86/01; H10D86/021; H10D86/0214; A; A61; A61B; A61B3/00; A61B3/10; A61B3/113; G; G02; G02B; G02B27/00; G02B27/0093; G02B27/01; G02B27/017; G02B27/0172; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13454; G02F1/136; G02F1/1362; G02F1/136277; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/30; G09G3/34; G09G3/36; H04; H04N; H04N5/00; H04N5/74; H04N5/7416; H04N5/7441; H04N9/00; H04N9/12; H04N9/31; H04N9/3141; H05; H05B; H05B33/00; H05B33/12; H10D30/00; H10D30/60; H10D30/67; H10D30/6729; H10D30/673; H10D30/6733; H10D30/6734; H10D30/6758; H10D84/00; H10D84/01; H10D84/02; H10D84/03; H10D84/038; H10D86/40; H10D86/60; H10D88/00; H10D88/01; H10H; H10H29/00; H10H29/10; H10H29/14; H10H29/142; H10W; H10W72/00; H10W72/01; H10W72/0198; H10W90/00; G02B27/0101; G02B2027/0132; G02B2027/0138; G02B27/0179; G02B2027/0187; G02B2027/0192; G02B2027/0198; G02B5/00; G02B5/30; G02F1/13336; G02F1/13613; G02F2202/00; G02F2202/10; G02F2202/105; G09G2300/00; G09G2300/02; G09G2300/023; G09G2300/08; G09G2300/0809; G09G2300/0842; G09G2320/00; G09G2320/02; G09G2320/0233; G09G2320/04; G09G2320/041; G09G2320/043; G09G2340/00; G09G2340/04; G09G2340/0464; G09G2370/00; G09G2370/04; G09G2370/042; G09G3/32; G09G3/3607; G09G3/3611; G09G3/3614; G09G3/3648; H01; H01S; H01S5/00; H01S5/02; H01S5/0206; H01S5/0217; H01S5/40; H01S5/42; H01S5/423; H04N5/66; H04N5/70; H04N5/7475; H04N5/7491; H10P; H10P72/00; H10P72/70; H10P72/74; H10P72/743; H10P72/7432
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
156 words
An active matrix circuit, driver circuits and logic circuits for a liquid crystal display having a light source for generating light, the display comprising: a) a common module body having tiles of circuits registered and adhered to the common module body, the circuits comprising a plurality of transistors formed in a silicon film positioned in a plane extending over an insulating layer; b) a plurality of pixel electrodes conductively connected to the transistors on at least one of the tiles through the insulating layer; c) driver circuits formed over the common module body and conductively connected to the transistors; d) logic circuits conductively interconnected with the driver circuits; e) liquid crystal material adjacent the module body for changing a polarization of light from the source; f) a polarizer for polarizing light impinging on the liquid crystal material; and g) an opaque shielding material positioned over a first side of the transistors connected to the pixel electrodes.
Claim 2
Dependent Claim
156 words
An active matrix circuit, driver circuits and logic circuits for a liquid crystal display having a light source for generating light, the display comprising: a) a common module body having tiles of circuits registered and adhered to the common module body, the circuits comprising a plurality of transistors formed in a silicon film positioned in a plane extending over an insulating layer; b) a plurality of pixel electrodes conductively connected to the transistors on at least one of the tiles through the insulating layer; c) driver circuits formed over the common module body and conductively connected to the transistors; d) logic circuits conductively interconnected with the driver circuits; e) liquid crystal material adjacent the module body for changing a polarization of light from the source; f) a polarizer for polarizing light impinging on the liquid crystal material; and g) an opaque shielding material positioned over a first side of the transistors connected to the pixel electrodes.
Claim 3
Dependent Claim
45 words
The apparatus of claim 1 wherein the transistors are field effect transistors having source and drain regions extending in the plane and formed on opposite sides of a gate region, and wherein an opaque material is a shield formed on opposite sides of the plane.
Claim 4
Dependent Claim
46 words
The active matrix of claim 1 further comprising an opaque material formed on a second side of the common module body that is opposite to the first side of the common module on which the transistors are formed, the opaque material shielding the transistors from light.
Claim 5
Dependent Claim
15 words
The active matrix of claim 1 wherein the common module body is a transparent material.
Claim 6
Dependent Claim
22 words
The active matrix of claim 1 wherein the transistors are field effect transistors having source and drain regions extending in the plane.
Claim 7
Dependent Claim
26 words
The active matrix of claim 1 wherein the transistors and electrodes are formed in a layer of an essentially single crystal material over a buried insulator.
Claim 8
Dependent Claim
16 words
The active matrix of claim 1 wherein the electrodes are formed of a transparent conductive material.
Claim 9
Dependent Claim
15 words
The active matrix of claim 7 wherein the transparent conductive material is indium tin oxide.
Claim 10
Dependent Claim
21 words
The active matrix of claim 1 further comprising an ultraviolet light cured adhesive for adhering the circuit tiles to the body.
Claim 11
Dependent Claim
176 words
An active matrix for a display having a light source for generating light, the active matrix comprising: a) a common transparent module body having tiles of circuits registered and adhered to the common module body and wherein the circuits comprise a plurality of transistors formed in a film of essentially single crystal silicon material over a buried insulator; b) an array of transparent conductive pixel electrodes formed on the tiles and conductively coupled to the transistors through the insulator, the pixel electrodes being actuated by respective transistors; c) an opaque material formed for shielding the transistors from light; d) driver circuits formed on the common module body and electrically connected to the transistors for driving a selected pixel electrode; e) logic circuits formed on the common module body and electrically connected with the driver circuits for selecting the selected pixel electrodes; f) a liquid crystal material adjacent the common module body for changing the polarization of light impinging on the liquid crystal material; and g) a polarizer for polarizing light impinging on the liquid crystal material.
Claim 12
Dependent Claim
176 words
An active matrix for a display having a light source for generating light, the active matrix comprising: a) a common transparent module body having tiles of circuits registered and adhered to the common module body and wherein the circuits comprise a plurality of transistors formed in a film of essentially single crystal silicon material over a buried insulator; b) an array of transparent conductive pixel electrodes formed on the tiles and conductively coupled to the transistors through the insulator, the pixel electrodes being actuated by respective transistors; c) an opaque material formed for shielding the transistors from light; d) driver circuits formed on the common module body and electrically connected to the transistors for driving a selected pixel electrode; e) logic circuits formed on the common module body and electrically connected with the driver circuits for selecting the selected pixel electrodes; f) a liquid crystal material adjacent the common module body for changing the polarization of light impinging on the liquid crystal material; and g) a polarizer for polarizing light impinging on the liquid crystal material.
Claim 13
Dependent Claim
44 words
The active matrix of claim 10 wherein the transistors are field effect transistors having source and drain regions extending in a plane and formed on opposite sides of a gate region, and wherein the opaque material is formed on opposite sides of the plane.
Claim 14
Dependent Claim
16 words
The active matrix of claim 10 wherein the pixel electrodes are formed of indium tin oxide.
Claim 15
Dependent Claim
131 words
An active matrix liquid crystal display comprising: an array of transistors formed with a silicon material that is positioned on a first side of an insulating layer and having an SOI structure, the array being secured to a transparent substrate with an adhesive, each transistor having a transistor contact; an array of transparent electrically conductive pixel electrodes formed over the insulating layer on a second side of the insulating layer opposite the first side, each pixel electrode being conductively connected to a transistor contact through an opening extending through the insulating layer; an opaque shielding material positioned on one side of each transistor; and a liquid crystal material positioned over the pixel electrodes, each pixel electrode being actuatable by a transistor to apply an electric field to the liquid crystal material.
Claim 16
Dependent Claim
131 words
An active matrix liquid crystal display comprising: an array of transistors formed with a silicon material that is positioned on a first side of an insulating layer and having an SOI structure, the array being secured to a transparent substrate with an adhesive, each transistor having a transistor contact; an array of transparent electrically conductive pixel electrodes formed over the insulating layer on a second side of the insulating layer opposite the first side, each pixel electrode being conductively connected to a transistor contact through an opening extending through the insulating layer; an opaque shielding material positioned on one side of each transistor; and a liquid crystal material positioned over the pixel electrodes, each pixel electrode being actuatable by a transistor to apply an electric field to the liquid crystal material.
Claim 17
Dependent Claim
20 words
The active matrix liquid crystal display of claim 13 wherein each transparent electrically conductive pixel electrode comprises indium tin oxide.
Claim 18
Dependent Claim
17 words
The active matrix liquid crystal display of claim 13 wherein the silicon material comprises single crystal silicon.
Claim 19
Dependent Claim
22 words
The active matrix liquid crystal display of claim 13 further comprising a plurality of circuit tiles adhered to a common module body.
Claim 20
Dependent Claim
131 words
An active matrix liquid crystal display comprising: an array of transistors formed with a silicon material that is positioned on a first side of an insulating layer and having an SOI structure, the array being secured to a transparent substrate with an adhesive, each transistor having a transistor contact; an array of indium tin oxide pixel electrodes formed over the insulating layer on a second side of the insulating layer opposite the first side, each pixel electrode being conductively connected to a transistor contact through an opening extending through the insulating layer; an opaque shielding material positioned on one side of each transistor; and a liquid crystal material positioned over the pixel electrodes, each pixel electrode being actuatable by a transistor to apply an electric field to the liquid crystal material.
Claim 21
Dependent Claim
131 words
An active matrix liquid crystal display comprising: an array of transistors formed with a silicon material that is positioned on a first side of an insulating layer and having an SOI structure, the array being secured to a transparent substrate with an adhesive, each transistor having a transistor contact; an array of indium tin oxide pixel electrodes formed over the insulating layer on a second side of the insulating layer opposite the first side, each pixel electrode being conductively connected to a transistor contact through an opening extending through the insulating layer; an opaque shielding material positioned on one side of each transistor; and a liquid crystal material positioned over the pixel electrodes, each pixel electrode being actuatable by a transistor to apply an electric field to the liquid crystal material.
Claim 22
Dependent Claim
17 words
The active matrix liquid crystal display of claim 17 wherein the silicon material comprises single crystal silicon.
Claim 23
Dependent Claim
22 words
The active matrix liquid crystal display of claim 17 further comprising a plurality of circuit tiles adhered to a common module body.
References Cited (Backward Citations)
GB2058427A
Cited
US4727047A
Cited
US4837182A
Cited
JPS57106181A
Cited
JPS58159516A
Cited
US4675667A
Cited
US4575854A
Cited
US4948231A
Cited
US4870475A
Cited
US4935792A
Cited
US4774205A
Cited
JPS6355529A
Cited
JPS63101830A
Cited
US4838654A
Cited
US4965565A
Cited
JPS6438727A
Cited
US4769680A
Cited
US4961629A
Cited
US4863877A
Cited
US4855255A
Cited
US4883561A
Cited
US4846931A
Cited
US5117298A
Cited
US5045895A
Cited
US5184235A
Cited
US5166816A
Cited
WO1990009038A1
Cited
WO1991002380A1
Cited
US5191453A
Cited
US4979002A
Cited
US5073806A
Cited
US5233211A
Cited
US5206749A
Cited
WO1992017814A1
Cited
US5317433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |