US5780872A
Expired / Lapsed
US
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Liquid crystal device, projection type color display device and driving circuit
Assignee: Seiko Epson Corp
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Filing: 1997-01-31
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Granted: 1998-07-14
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Expires: 2017-01-31
Abstract
Abstract An active matrix panel including a matrix of driving electrodes couples through thin film transistor switches to a corresponding source line and gate line and at least one of a driver circuit including complementary thin film transistors for driving the source and/or gate lines of the picture elements on the substrate. The thin film transistors of the active matrix have the same cross-sectional structure as the P-type or the N-type thin film transistors forming the driver circuit and are formed during the same patterning process.
Inventors
- 👤 Toshiyuki Misawa
- 👤 Hiroyuki Oshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:41
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13454; H; H10; H10D; H10D84/00; H10D84/80; H10D84/82; H10D84/83; H10D84/85; H10D84/859; G09; G09G; G09G3/00; G09G3/001; G09G3/002; G09G3/003; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G3/3674; G09G3/3677; G09G3/3685; G09G3/3688; H10D84/01; H10D84/0123; H10D84/0126; H10D84/0165; H10D84/0191; H10D86/00; H10D86/40; H10D86/441; H10D86/60; H10W; H10W20/00; H10W20/40; G02F1/133345; G02F1/136; G02F1/1362; G02F1/136213; G02F1/136254; G09G2300/00; G09G2300/04; G09G2300/0404; G09G2300/0408; G09G2300/08; G09G2300/0809; G09G2330/00; G09G2330/12; G09G3/006; G09G3/2007; G09G3/2011; G09G3/3659; H10D30/00; H10D30/60; H10D30/67; H10D30/6704; H10D30/6713; H10W72/00; H10W72/01; H10W72/015; H10W72/01515; H10W72/071; H10W72/075; Y; Y10; Y10S; Y10S257/00; Y10S257/923; Y10S345/00; Y10S345/904
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
162 words
A liquid crystal device for an electro-optical device comprising: a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
Claim 2
Dependent Claim
162 words
A liquid crystal device for an electro-optical device comprising: a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
Claim 3
Dependent Claim
38 words
The liquid crystal device of claim 1, wherein the plurality of sample-hold circuits include thin film transistors and the plurality of connecting lines are made of a same material as a gate electrode of the thin film transistors.
Claim 4
Dependent Claim
21 words
The liquid crystal device of claim 1, wherein the signal buses are made of a same material as the source lines.
Claim 5
Dependent Claim
16 words
The liquid crystal device of claim 2, wherein the connecting lines are made of polycrystalline silicon.
Claim 6
Dependent Claim
15 words
The liquid crystal device of claim 3, wherein the signal buses are made of aluminum.
Claim 7
Dependent Claim
17 words
The liquid crystal device of claim 1, wherein a width of the connecting lines are substantially equal.
Claim 8
Dependent Claim
17 words
The liquid crystal device of claim 1, wherein a length of the connecting lines are substantially equal.
Claim 9
Dependent Claim
180 words
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising: a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
Claim 10
Dependent Claim
180 words
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising: a picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and the resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to the resistance of the connecting line for connecting the another one of the signal buses to the another one of sample-hold circuits.
Claim 11
Dependent Claim
39 words
The projection type display device of claim 8, wherein the plurality of sample-hold circuits include thin film transistors and the plurality of connecting lines are made of a same material as a gate electrode of the thin film transistors.
Claim 12
Dependent Claim
22 words
The projection type display device of claim 8, wherein the signal buses are made of a same material as the source lines.
Claim 13
Dependent Claim
17 words
The projection type display device of claim 9, wherein the connecting lines are made of polycrystalline silicon.
Claim 14
Dependent Claim
16 words
The projection type display device of claim 10, wherein the signal buses are made of aluminum.
Claim 15
Dependent Claim
18 words
The projection type display device of claim 8, wherein a width of the connecting lines are substantially equal.
Claim 16
Dependent Claim
18 words
The projection type display device of claim 8, wherein a length of the connecting lines are substantially equal.
Claim 17
Dependent Claim
118 words
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and a resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to a resistance of the connecting line for connecting the another one of the signal buses to the another one of the sample-hold circuits.
Claim 18
Dependent Claim
118 words
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a distance between one of the signal buses and one of the sample-hold circuits is different from a distance between another one of the signal buses and another one of the sample-hold circuits, and a resistance of the connecting line for connecting the one of the signal buses to the one of the sample-hold circuits is substantially equal to a resistance of the connecting line for connecting the another one of the signal buses to the another one of the sample-hold circuits.
Claim 19
Dependent Claim
15 words
The driving circuit of claim 15, wherein the connecting lines are made of polycrystalline silicon.
Claim 20
Dependent Claim
14 words
The driving circuit of claim 15, wherein the signal buses are made of aluminum.
Claim 21
Dependent Claim
149 words
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising: a picture element matrix formed over a substrate, the picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
Claim 22
Dependent Claim
149 words
A projection type display device including a light source, at least one light valve and at least one projecting optical system for projecting a color image, comprising: a picture element matrix formed over a substrate, the picture element matrix including a plurality of source lines and a plurality of picture elements coupled to the plurality of source lines; and a source line driving circuit coupled to the picture element matrix through the plurality of source lines, the source line driving circuit comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
Claim 23
Dependent Claim
17 words
The projection type display device of claim 18, wherein the connecting lines are made of polycrystalline silicon.
Claim 24
Dependent Claim
16 words
The projection type display device of claim 18, wherein the signal buses are made of aluminum.
Claim 25
Dependent Claim
78 words
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
Claim 26
Dependent Claim
78 words
A driving circuit for driving a liquid crystal display device comprising a plurality of signal buses and a plurality of sample-hold circuits coupled to the plurality of signal buses through a plurality of connecting lines, wherein a width and a length of at least one of the plurality of connecting lines is different from a width and a length of another one of the plurality of connecting lines and the plurality of connecting lines have substantially equal resistances.
Claim 27
Dependent Claim
15 words
The driving circuit of claim 21, wherein the connecting lines are made of polycrystalline silicon.
Claim 28
Dependent Claim
14 words
The driving circuit of claim 21, wherein the signal buses are made of aluminum.
References Cited (Backward Citations)
US3964941A
Cited
US3967253A
Cited
US4271422A
Cited
US4199773A
Cited
US4346378A
Cited
US4429305A
Cited
GB2126779A
Cited
GB2070857A
Cited
US4883986A
Cited
JPS58137892A
Cited
US4399605A
Cited
GB2117970A
Cited
US4586039A
Cited
FR2594580A1
Cited
US4740782A
Cited
US4507846A
Cited
JPS59150478A
Cited
US4573766A
Cited
JPS60154660A
Cited
EP0179914A1
Cited
US4677735A
Cited
US4799057A
Cited
JPS61116334A
Cited
US4724433A
Cited
US4881066A
Cited
JPS61207073A
Cited
JPS61235818A
Cited
US4823126A
Cited
US4671642A
Cited
EP0239958A2
Cited
US4857907A
Cited
EP0259875A2
Cited
US4818981A
Cited
US4838654A
Cited
US4936656A
Cited
US4931787A
Cited
US4851717A
Cited
JPS6352121A
Cited
US4916509A
Cited
US4864890A
Cited
US4922240A
Cited
US4884243A
Cited
US5013939A
Cited
US5095348A
Cited
US5073723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-13 | 2002-01-12 | 2002-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-13 | 2006-01-12 | 2006-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-13 | 2010-01-12 | 2010-07-14 | $7700.00 | Window Closed / Lapsed |