Patent US4802743A successfully refreshed from Google Patents.
US4802743A
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Liquid crystal device having color filters wherein the color filters formed from a polyamino resin containing coloring materials
Assignee: Canon Inc
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Filing: 1987-03-18
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Granted: 1989-02-07
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Expires: 2007-03-18
Abstract
Abstract A liquid crystal device is provided which comprises a liquid crystal provided between a pair of substrates each having a transparent electrode formed thereon, and a color filter provided on at least one of the substrates, wherein the color filter comprises a film formed from a polyamino resin containing a coloring material.
Inventors
- 👤 Hideaki Takao
- 👤 Taiko Motoi
- 👤 Nobuyuki Sekimura
- 👤 Masaru Kamio
- 👤 Tatsuo Murata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:39
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
50 words
A liquid crystal device comprising a liquid crystal provided between a pair of substrates each having a transparent electrode formed thereon, and a color filter provided on at least one of said substrates, said color filter comprising a film formed from a polyamino resin containing a coloring material dispersed therein.
Claim 2
Dependent Claim
50 words
A liquid crystal device comprising a liquid crystal provided between a pair of substrates each having a transparent electrode formed thereon, and a color filter provided on at least one of said substrates, said color filter comprising a film formed from a polyamino resin containing a coloring material dispersed therein.
Claim 3
Dependent Claim
16 words
The liquid crystal device according to claim 1, wherein said polyamino resin is a polyamide resin.
Claim 4
Dependent Claim
16 words
The liquid crystal device according to claim 2, wherein said polyamino resin is a polyimide resin.
Claim 5
Dependent Claim
20 words
The liquid crystal device according to claim 1, wherein said polyamino resin has a photosensitive group bonded in its molecule.
Claim 6
Dependent Claim
53 words
The liquid crystal device according to claim 4, wherein said photosensitive group is represented by Formula (1) shown below: ##STR6## wherein R 1 represents CHX═CY--COO--Z--, wherein X represents --H or --C 6 H 5 , Y represents --H or --CH 3 , and Z represents --, an ethyl group or a glycidyl group.
Claim 7
Dependent Claim
28 words
The liquid crystal device according to claim 4, wherein said photosensitive group is represented by Formula (2) shown below: ##STR7## wherein Y represents --H or --CH 3 .
Claim 8
Dependent Claim
56 words
The liquid crystal device according to claim 4, wherein said photosensitive group is represented by Formula (3) shown below: ##STR8## wherein R 2 represents CHX═CY--CONH--, CH 2 ═CY-- COO--(CH 2 ) 2 --OCO-- or CH 2 ═CY--COO--CH 2 --; X represents --H or --C 6 H 5 ; and Y represents --H or --CH 3 .
Claim 9
Dependent Claim
37 words
The liquid crystal device according to claim 4, wherein said photosensitive group is represented by General Formula (4), (5) or (6) shown below: ##STR9## wherein R 3 represents --H, an alkyl group or an alkoxy group, ##STR10##
Claim 10
Dependent Claim
24 words
The liquid crystal device according to claim 4, wherein said polyamino resin having the photosensitive group bonded in its molecule is a polyamide resin.
Claim 11
Dependent Claim
24 words
The liquid crystal device according to claim 4, wherein said polyamino resin having the photosensitive group bonded in its molecule is a polyimide resin.
Claim 12
Dependent Claim
17 words
The liquid crystal device according to claim 1, wherein said liquid crystal is a ferroelectric liquid crystal.
Claim 13
Dependent Claim
19 words
The liquid crystal device according to claim 11, wherein said ferroelectric liquid crystal is a chiral smectic liquid crystal;
Claim 14
Dependent Claim
37 words
The liquid crystal device according to claim 12, wherein said chiral smectic liquid crystal is set to have a film thickness which is thin enough to unwind spiral structure inherent therein when no electric field is applied.
Claim 15
Dependent Claim
23 words
The liquid crystal device according to claim 12, wherein said chiral smectic liquid crystal has a chiral smectic C phase or H phase.
Claim 16
Dependent Claim
21 words
The liquid crystal device according to claim 1, wherein said color filter is provided between the transparent electrode and the substrate.
Claim 17
Dependent Claim
18 words
The liquid crystal device according to claim 15, wherein an orientation-controlling film is formed on said transparent electrodes.
Claim 18
Dependent Claim
19 words
The liquid crystal device according to claim 16, wherein a uniaxially orienting axis is imparted to said orientation-controlling film.
Claim 19
Dependent Claim
19 words
The liquid crystal device according to claim 17, wherein said uniaxially orienting axis is imparted according to rubbing treatment.
Claim 20
Dependent Claim
22 words
The liquid crystal device according to claim 16, wherein an insulating film is provided between said transparent electrodes and said orientation-controlling film.
Claim 21
Dependent Claim
22 words
The liquid crystal device according to claim 15, wherein a protective film is provided between said color filter and said transparent electrodes.
Claim 22
Dependent Claim
49 words
The liquid crystal device according to claim 1, wherein one of said transparent electrodes functions as a scanning electrode and the other functions as a signal electrode, respectively, and said color filter is provided at every positin where said scanning electrode and said signal electrode form a crossing portion.
Claim 23
Dependent Claim
45 words
The liquid crystal device according to claim 21, wherein a blue color filter, a green color filter and a red color filter are each independently provided as said color filter at every position where said scanning electrode and said signal electrode form a crossing portion.
Claim 24
Dependent Claim
49 words
The liquid crystal device according to claim 22, wherein a film formed by a polyamino resin is provided between said blue color filter and said green color filter, between said blue color filter and said red color filter, or between said green color filter and said red color filter.
Claim 25
Dependent Claim
16 words
The liquid crystal device according to claim 23, wherein said polyamino resin is a polyamide resin.
Claim 26
Dependent Claim
16 words
The liquid crystal device according to claim 23, wherein said polyamino resin is a polyimide resin.
Claim 27
Dependent Claim
23 words
The liquid crystal device accorsing to claim 23, wherein said polyamino resin is a resin having a photosensitive group bonded in its molecule.
Claim 28
Dependent Claim
17 words
The liquid crystal device according to claim 23, wherein a light-intercepting material is contained in said film.
Claim 29
Dependent Claim
16 words
The liquid crystal device according to claim 1, wherein said coloring material is a particulate pigment.
Claim 30
Dependent Claim
33 words
The liquid crystal device according to claim 28, wherein said pigment is at least one of the group consisting of azo, phthalocyanine, indigo, anthraquinone, perylene, perynone, dioxazine, quinachridone, isoindolinone, phthalone and azomethine pigments.
Claim 31
Dependent Claim
28 words
A color filter which is obtained by forming into a film a coating solution containing a polyamino resin having a photosensitive group and a coloring material dispersed therein.
Claim 32
Dependent Claim
28 words
A color filter which is obtained by forming into a film a coating solution containing a polyamino resin having a photosensitive group and a coloring material dispersed therein.
Claim 33
Dependent Claim
15 words
The color filter according to claim 30, wherein said polyamino resin is a polyamide resin.
Claim 34
Dependent Claim
15 words
The color filter according to claim 30, wherein said polyamino resin is a polyimide resin.
Claim 35
Dependent Claim
52 words
The color filter according to claim 30, wherein said photosensitive group is represented by Formula (1) shown below: ##STR11## wherein R 1 represents CHX═CY--COO--Z--, wherein X represents --H or --C 6 H 5 , Y represents --H or --CH 3 , and Z represents --, an ethyl group or a glycidyl group.
Claim 36
Dependent Claim
27 words
The color filter according to claim 28, wherein said photosensitive group is represented by Formula (2) shown below: ##STR12## wherein Y represents --H or --CH 3 .
Claim 37
Dependent Claim
55 words
The color filter according to claim 30, wherein said photosensitive group is represented by Formula (3) shown below: ##STR13## wherein R 2 represents CHX═CY--CONH--, CH 2 ═CY-- COO--(CH 2 ) 2 --OCO-- or CH 2 ═CY--COO--CH 2 --; X represents --H or --C 6 H 5 ; and Y represents --H or --CH 3 .
Claim 38
Dependent Claim
35 words
The color filter according to claim 30, wherein said photosensitive group is represented by Formula (4), (5) or (6) shown below: ##STR14## wherein R 3 represents --H, an alkyl group or an alkoxy group, ##STR15##
Claim 39
Dependent Claim
15 words
The color filter according to claim 30, wherein said coloring material is a particulate pigment.
Claim 40
Dependent Claim
32 words
The color filter according to claim 37, wherein said pigment is at least one of the groups consisting of azo, phthalocyanine, indigo, anthraquinone, perylene, perynone, dioxazine, quinachridone, isoindolinone, phthalone and azomethine pigments.
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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) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |