Patent FR2439979A2 successfully refreshed from Google Patents.
Patent US5691794A successfully refreshed from Google Patents.
US5691794A
Expired / Lapsed
US
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Liquid crystal display device
Assignee: Canon Inc
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Filing: 1994-01-31
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Granted: 1997-11-25
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Expires: 2014-01-31
Abstract
Abstract A liquid crystal display device comprised of picture element electrodes provided on a first plane of a substrate and an opposed electrode placed opposedly to the picture element electrodes, between which a liquid crystal is carried, characterized in that in a region of the substrate corresponding to the picture element electrodes is formed a concave portion from the second plane opposite the first plane of the substrate, the region being light translucent, and the concave portion having a translucent material enclosed therein.
Inventors
- 👤 Junichi Hoshi
- 👤 Shigetoshi Sugawa
- 👤 Shunsuke Inoue
- 👤 Osamu Hamamoto
- 👤 Yoshihiko Fukumoto
- 👤 Yutaka Genchi
- 👤 Masaru Kamio
- 👤 Mamoru Miyawaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:09
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1345; G02F1/13454
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
104 words
A liquid crystal display device comprising: a substrate having a plurality of picture element electrodes provided on a first plane of said substrate; an opposed electrode oriented opposed to said picture element electrodes; and a liquid crystal provided between said picture element electrodes and said opposed electrode, said liquid crystal display device further comprising a concave portion formed in a light-translucent region of said substrate corresponding to said picture element electrodes in a second plane opposite said first plane, and said concave portion being sealed by a transparent substrate to form a space, said space having a light transmitting and flowable material enclosed therein.
Claim 2
Dependent Claim
104 words
A liquid crystal display device comprising: a substrate having a plurality of picture element electrodes provided on a first plane of said substrate; an opposed electrode oriented opposed to said picture element electrodes; and a liquid crystal provided between said picture element electrodes and said opposed electrode, said liquid crystal display device further comprising a concave portion formed in a light-translucent region of said substrate corresponding to said picture element electrodes in a second plane opposite said first plane, and said concave portion being sealed by a transparent substrate to form a space, said space having a light transmitting and flowable material enclosed therein.
Claim 3
Dependent Claim
19 words
A liquid crystal display device according to claim 1, wherein said light transmitting and flowable material is a resin.
Claim 4
Dependent Claim
43 words
A liquid crystal display device according to claim 1, wherein said light transmitting and flowable material is a liquid crystal or a liquid having substantially the same specific gravity as the liquid crystal provided between said picture element electrodes and said opposed electrode.
Claim 5
Dependent Claim
30 words
A liquid crystal display device according to claim 1, wherein said light transmitting and flowable material is an inert gas having nitrogen, helium, neon or argon as the main component.
Claim 6
Dependent Claim
16 words
A liquid crystal display device according to claim 1, wherein said substrate is single crystal silicon.
Claim 7
Dependent Claim
22 words
A liquid crystal display device according to claim 1, wherein said concave portion is formed by partly removing said substrate by etching.
Claim 8
Dependent Claim
31 words
A liquid crystal display device according to claim 1, wherein a passive element or an active element for driving said liquid crystal is disposed on the first plane of said substrate.
Claim 9
Dependent Claim
19 words
A liquid crystal display device according to claim 1, wherein an optical element is incorporated into said transparent substrate.
Claim 10
Dependent Claim
30 words
A liquid crystal display device according to claim 1, wherein said light transmitting and flowable material is sealed by disposing a seal member between said transparent substrate and said substrate.
Claim 11
Dependent Claim
45 words
A liquid crystal display device according to claim 9, wherein the volume change of said light transmitting and flowable material with the temperature variation is substantially equal to the volume change of a space defined by said substrate, said seal member and said transparent substrate.
Claim 12
Dependent Claim
22 words
A liquid crystal display device according to claim 10, wherein said seal member is mounted in a groove provided on said substrate.
Claim 13
Dependent Claim
19 words
A liquid crystal display device according to claim 10, wherein said seal member is mounted within said concave portion.
Claim 14
Dependent Claim
32 words
A liquid crystal display device according to claim 10, wherein said transparent substrate for sealing has a convex shape in cross section in which its central portion protrudes toward a hollow portion.
Claim 15
Dependent Claim
25 words
A liquid crystal display device according to claim 1, further comprising a region for absorbing the volume change of said light transmitting and flowable material.
Claim 16
Dependent Claim
30 words
A liquid crystal display device according to claim 1, wherein the same material as said light transmitting and flowable material is provided in said region for absorbing the volume change.
Claim 17
Dependent Claim
25 words
A liquid crystal display device according to claim 14, wherein a gas is enclosed at least partly in said region for absorbing the volume change.
Claim 18
Dependent Claim
22 words
A liquid crystal display device according to claim 1, wherein a resin and an inert gas are enclosed within said concave portion.
Claim 19
Dependent Claim
16 words
A liquid crystal display device according to claim 17, wherein said resin has a multi-layer arrangement.
Claim 20
Dependent Claim
20 words
A liquid crystal display device according to claim 17, wherein the thickness of said resin is 200 μm or less.
Claim 21
Dependent Claim
22 words
A liquid crystal display device according to claim 17, wherein said inert gas comprises dry air, dry nitrogen, helium, neon, or argon.
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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) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |