Patent US4744637A successfully refreshed from Google Patents.
US4744637A
Expired / Lapsed
US
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Liquid crystal device with a protective layer of a particular coefficient of expansion
Assignee: Canon Inc
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Filing: 1985-10-03
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Granted: 1988-05-17
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Expires: 2005-10-03
Abstract
Abstract A liquid crystal device comprising a pair of substrates and a liquid crystal disposed therebetween. At least one of the substrates has a color filter layer, a protective layer and a transparent electrode formed in the order named thereon. The protective layer has a coefficient of linear expansion 0.01 to 6 times that of the transparent electrode.
Inventors
- 👤 Nobuyuki Sekimura
- 👤 Masaru Kamio
- 👤 Eiji Sakamoto
- 👤 Taiko Motoi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133345
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A liquid crystal device comprising a pair of substrates and a liquid crystal disposed therebetween, at least one of the substrates having a resinous color filter layer, a resinous protective layer and a transparent electrode disposed successively in the order named thereon, said protective layer having a coefficient of linear expansion 0.01 to 6 times that of the transparent electrode said protective layer being in contact with said electrode.
Claim 2
Dependent Claim
69 words
A liquid crystal device comprising a pair of substrates and a liquid crystal disposed therebetween, at least one of the substrates having a resinous color filter layer, a resinous protective layer and a transparent electrode disposed successively in the order named thereon, said protective layer having a coefficient of linear expansion 0.01 to 6 times that of the transparent electrode said protective layer being in contact with said electrode.
Claim 3
Dependent Claim
27 words
A liquid crystal device according to claim 1, wherein said protective layer has a coefficient of linear expansion 0.01 to 5 times that of the transparent electrode.
Claim 4
Dependent Claim
27 words
A liquid crystal device according to claim 1, wherein said protective layer has a coefficient of linear expansion 0.05 to 5 times that of the transparent electrode.
Claim 5
Dependent Claim
20 words
A liquid crystal device according to claim 1, wherein said protective layer comprises a set film of a setting resin.
Claim 6
Dependent Claim
16 words
A liquid crystal device according to claim 4, wherein said setting resin is a thermosetting resin.
Claim 7
Dependent Claim
20 words
A liquid crystal device according to claim 1, wherein said protective film comprises a film of an insulating inorganic material.
Claim 8
Dependent Claim
17 words
A liquid crystal device according to claim 6, wherein said inorganic insulating material is SiO 2 .
Claim 9
Dependent Claim
24 words
A liquid crystal device according to claim 1, wherein said transparent electrode comprises a film of an indium oxide-tin oxide mixture formed by sputtering.
Claim 10
Dependent Claim
25 words
A liquid crystal device according to claim 1, wherein said color filter layer comprises a film of a resinous binder containing a pigment or dye.
Claim 11
Dependent Claim
26 words
A liquid crystal device according to claim 1, wherein said transparent electrode has a coefficient of linear expansion of 40×10 -7 /°C. to 100×10 -7 /°C.
Claim 12
Dependent Claim
26 words
A liquid crystal device according to claim 1, wherein said protective layer has a coefficient of linear expansion of 2×10 -7 /°C. to 6×10 -5 /°C.
Claim 13
Dependent Claim
35 words
A liquid crystal device according to claim 1, wherein said transparent film is coated with an orientation controlling film having a unidirectional orientation axis with an effect of orienting liquid crystal molecules in one direction.
Claim 14
Dependent Claim
24 words
A liquid crystal device according to claim 1, wherein at least one of the substrates has an orientation controlling film covering the transparent electrode.
Claim 15
Dependent Claim
20 words
A liquid crystal device according to claim 13, wherein said orientation controlling film is a polyimide film treated by rubbing.
Claim 16
Dependent Claim
18 words
A liquid crystal device according to claim 1, wherein said liquid crystal is a ferroelectric liquid crystal material.
Claim 17
Dependent Claim
17 words
A liquid crystal device according to claim 15, wherein said ferroelectric liquid crystal placed under bistability condition.
Claim 18
Dependent Claim
27 words
A liquid crystal device according to claim 16, wherein said ferroelectric liquid crystal placed under bistability condition is in a chiral smectic phase with a non-spiral texture.
Claim 19
Dependent Claim
27 words
A liquid crystal device according to claim 17, wherein said chiral smectic phase is chiral smectic C phase, H phase, J phase, K phase or G phase.
References Cited (Backward Citations)
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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) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |