US5513028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display with display area having same height as peripheral portion thereof
Assignee: Canon Inc
•
Filing: 1995-04-10
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Granted: 1996-04-30
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Expires: 2015-04-10
Abstract
Abstract A liquid crystal display device has a pixel electrode substrate with a step defined by adjacent display and non-display areas. The display area has substantially the same height as a portion of the close periphery thereof. In the liquid crystal display device, the step is an electrically insulated dummy part which is not used as the display area. The dummy part has the same layer structure as the pixels in the display area.
Inventors
- 👤 Koichi Sono
- 👤 Mamoru Miyawaki
- 👤 Akira Ishizaki
- 👤 Katsuhisa Ogawa
- 👤 Katsuhito Sakurai
- 👤 Shigetoshi Sugawa
- 👤 Shigeki Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/1339; G02F1/1343; G02F1/134309; G02F1/134336; G02F1/133388; G02F1/1337; G02F1/1345; G02F1/13454; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
73 words
A liquid crystal display device, comprising: a pixel electrode substrate having a display area and a non-display area adjacent said display area, wherein said non-display area comprises an electrically insulated dummy part not used as said display area, and wherein said dummy part has a height substantially the same as that of said display area and has a layer structure which is the same as that of a pixel in said display area.
Claim 2
Dependent Claim
73 words
A liquid crystal display device, comprising: a pixel electrode substrate having a display area and a non-display area adjacent said display area, wherein said non-display area comprises an electrically insulated dummy part not used as said display area, and wherein said dummy part has a height substantially the same as that of said display area and has a layer structure which is the same as that of a pixel in said display area.
Claim 3
Dependent Claim
21 words
A liquid crystal display device according to claim 1, wherein said display area and said dummy part have an alignment film.
Claim 4
Dependent Claim
28 words
A liquid crystal display device according to claim 1, wherein said dummy part has substantially the same shape as that of an adjacent pixel in said display area.
Claim 5
Dependent Claim
20 words
A liquid crystal display device according to claim 1, wherein said dummy part has a circuit element or a wiring.
Claim 6
Dependent Claim
30 words
A liquid crystal display device according to claim 4, wherein said circuit element or wiring has substantially the same shape as that of an adjacent pixel in said display area.
Claim 7
Dependent Claim
30 words
A liquid crystal display device according to claim 1, wherein said dummy part is formed in the surrounding areas of at least two mutually opposed sides of said display area.
Claim 8
Dependent Claim
26 words
A liquid crystal display device according to claim 1, wherein a liquid crystal sealing area is formed at a border between said display and non-display areas.
Claim 9
Dependent Claim
21 words
A liquid crystal display device according to claim 1, wherein a liquid crystal sealing area is formed on said dummy part.
Claim 10
Dependent Claim
23 words
A liquid crystal display device according to claim 4, wherein a liquid crystal sealing area is formed on said circuit element or wiring.
Claim 11
Dependent Claim
32 words
A liquid crystal display device according to claim 6, wherein a liquid crystal sealing area is formed on said dummy part provided in the surrounding areas of said mutually opposed two sides.
Claim 12
Dependent Claim
28 words
A liquid crystal display device according to claim 1, wherein said dummy part has a width of about five scanning lines or display lines in said display area.
Claim 13
Dependent Claim
21 words
A liquid crystal display device according to claim 1, wherein said pixel electrode substrate is provided with a thin film transistor.
Claim 14
Dependent Claim
25 words
A liquid crystal display device according to claim 1, wherein a counter electrode substrate, opposed to said pixel electrode substrate, is provided with a filter.
Claim 15
Dependent Claim
16 words
A liquid crystal display device according to claim 13, wherein said filter is a color filter.
Claim 16
Dependent Claim
24 words
A liquid crystal display device according to claim 13, wherein said filter is provided corresponding to at least a part of the display area.
Claim 17
Dependent Claim
19 words
A liquid crystal display device according to claim 1, wherein an opaque layer is provided within said non-display area.
Claim 18
Dependent Claim
26 words
A liquid crystal display device according to any of claims 1, 2-15 16, in which said non-display area extends around the periphery of said display area.
References Cited (Backward Citations)
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Cited
JPH0287116A
Cited
US5040041A
Cited
US5132821A
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US5298297A
Cited
US5285301A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |