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Patent US4867537A successfully refreshed from Google Patents.
US4867537A
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Color liquid crystal display device
Assignee: TPO Hong Kong Holding Ltd
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Filing: 1988-07-01
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Granted: 1989-09-19
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Expires: 2008-07-01
Abstract
Abstract A color liquid crystal display device comprises first and second transparent substrates, and a liquid crystal sealed therebetween. A plurality of display electrodes and thin film transistors each connected to each of the display electrodes are formed on the first transparent substrate. Color filters are formed on the second transparent substrate such that they each face each of the display electrodes. A common electrode is also formed over the entire surface of the second transparent electrode. The gap between adjacent color filters is closed by a metal layer capable of blocking light. These light-blocking layers overlie the common electrode in contact therewith.
Inventors
- 👤 Shigeo Aoki
- 👤 Katsumi Miyake
- 👤 Yasuhiro Ugai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:41
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/133514; G02F1/136; G02F1/1362; G02F1/1368
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
In a color liquid crystal display device of the type comprising first and second transparent substrates spaced apart a small distance and facing each other, a liquid crystal sealed between said first and second transparent substrates, said first transparent substrate carrying on an inner surface thereof color filters for defining color picture elements and first transparent electrode means formed in contact with one of the two surfaces of each said color filter, and said second transparent substrate carrying on an inner surface thereof second transparent electrode means in opposing relation to said color filters, the improvement wherein: transparent electrical conductor layers are formed in contact with the other of the two surfaces of said color filters on the inner surface of said first transparent substrate and electrically connected to said first transparent electrode means along side edges of said color filters.
Claim 2
Dependent Claim
141 words
In a color liquid crystal display device of the type comprising first and second transparent substrates spaced apart a small distance and facing each other, a liquid crystal sealed between said first and second transparent substrates, said first transparent substrate carrying on an inner surface thereof color filters for defining color picture elements and first transparent electrode means formed in contact with one of the two surfaces of each said color filter, and said second transparent substrate carrying on an inner surface thereof second transparent electrode means in opposing relation to said color filters, the improvement wherein: transparent electrical conductor layers are formed in contact with the other of the two surfaces of said color filters on the inner surface of said first transparent substrate and electrically connected to said first transparent electrode means along side edges of said color filters.
References Cited (Backward Citations)
US4569574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |