US4733948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color liquid crystal display with light intercepting member
Assignee: Canon Inc
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Filing: 1985-12-17
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Granted: 1988-03-29
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Expires: 2005-12-17
Abstract
Abstract A color liquid crystal display panel is provided with a first substrate having thin film transistors arranged in rows and columns, a gate wire connecting commonly the gates for the thin film transistors in the columns, a source wire connecting commonly the sources for the thin film transistors in the rows and display electrodes connected respectively to each of the drains for the thin film transistors, a second substrate having a common electrode opposed to said display electrodes and acolor filter and a liquid crystal interposed between said first substrate and second substrate. The display panel comprises a light intercepting film provided on said second substrate at a position confronting with said thin film transistors.
Inventors
- 👤 Nobuko Kitahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:54
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/136; G02F1/1362
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A color liquid crystal display panel provided with a first substrate having thin film transistors arranged in rows and columns, a gate wire connecting commonly the gates for the thin film transistors the columns, a source wire connecting commonly the sources for the thin film transistors, a second substrate having a common electrode opposed to said display electrodes and a color filter, and a liquid crystal interposed between said first substrate and said second substrate, comprising a light intercepting film provided on said second substrate at a position confronting with said thin film transistors.
Claim 2
Dependent Claim
94 words
A color liquid crystal display panel provided with a first substrate having thin film transistors arranged in rows and columns, a gate wire connecting commonly the gates for the thin film transistors the columns, a source wire connecting commonly the sources for the thin film transistors, a second substrate having a common electrode opposed to said display electrodes and a color filter, and a liquid crystal interposed between said first substrate and said second substrate, comprising a light intercepting film provided on said second substrate at a position confronting with said thin film transistors.
Claim 3
Dependent Claim
21 words
A color liquid crystal display panel according to claim 1, wherein said light intercepting film is formed of a metal film.
Claim 4
Dependent Claim
50 words
A color liquid crystal display panel according to claim 1, wherein a metal film is provided which is confronting in position with at least one wire of the gate wire and the source wire on said first substrate, and said metal film is electrically connected to said light intercepting film.
Claim 5
Dependent Claim
35 words
A color liquid crystal display panel according to claim 3, wherein a metal film comprising said light intercepting film and the second metal film are obtained by formation of coated film on said common electrode.
Claim 6
Dependent Claim
22 words
A color liquid crystal display panel according to claim 1, wherein said thin film transistors comprise amorphous silicon formed as the semiconductor.
Claim 7
Dependent Claim
19 words
A color liquid crystal display panel according to claim 1, wherein said liquid crystal is a nematic liquid crystal.
Claim 8
Dependent Claim
19 words
A color liquid crystal display panel according to claim 1, wherein said nematic crystal is a twisted nematic crystal.
Claim 9
Dependent Claim
19 words
A color liquid crystal display panel according to claim 1, wherein said liquid crystal is a ferroelectric liquid crystal.
Claim 10
Dependent Claim
187 words
A color liquid crystal display panel provided with a first substrate having thin film transistors arranged in rows and columns, a gate wire commonly connecting the gates for the thin film transistors on the columns, a source wire commonly connecting the sources for the thin film transistors on the rows and display electrodes connected respectively to each of the drains for the thin film transistors, a second substrate having a common electrode opposed to said display electrodes and a color filter, a liquid crystal interposed between said first substrate and said second substrate, which comprises: a metal light intercepting film provided on said second substrate at a position facing said thin film transistors; and a metal mask arranged so as to be opposed in position to said gate wire and said source wire, said metal light intercepting film and said metal mask being electrically connected with each other, and both being formed in one plane on said common electrode, and said metal light intercepting film being formed so as to be larger than said thin film transistors and so as to be wider than said metal mask.
Claim 11
Dependent Claim
187 words
A color liquid crystal display panel provided with a first substrate having thin film transistors arranged in rows and columns, a gate wire commonly connecting the gates for the thin film transistors on the columns, a source wire commonly connecting the sources for the thin film transistors on the rows and display electrodes connected respectively to each of the drains for the thin film transistors, a second substrate having a common electrode opposed to said display electrodes and a color filter, a liquid crystal interposed between said first substrate and said second substrate, which comprises: a metal light intercepting film provided on said second substrate at a position facing said thin film transistors; and a metal mask arranged so as to be opposed in position to said gate wire and said source wire, said metal light intercepting film and said metal mask being electrically connected with each other, and both being formed in one plane on said common electrode, and said metal light intercepting film being formed so as to be larger than said thin film transistors and so as to be wider than said metal mask.
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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) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |