US4818075A
Expired / Lapsed
US
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Color liquid crystal device
Assignee: Canon Inc
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Filing: 1987-12-31
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Granted: 1989-04-04
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Expires: 2007-12-31
Abstract
Abstract Disclosed is a color liquid crystal device comprising a pair of substrates having electrodes, a color filter disposed between at least one of the pair of substrates and the electrodes or on the electrodes, and a liquid crystal disposed between the pair of substrates. The color filter is composed of a resin and a coloring material, and V and P have a relationship of 1/3≦P/V≦3/2, where V (gr) and P (gr) are the respective contents of the resin and the coloring material that forms the color filter.
Inventors
- 👤 Hideaki Takao
- 👤 Miki Tamura
- 👤 Masaru Kamio
- 👤 Tatsuo Murata
- 👤 Nobuyuki Sekimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:39
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: 36
Claim 1
Independent Claim
82 words
A color liquid crystal device comprising a pair of substrates having electrodes, a color filter disposed between at least one of said pair of substrates and its electrode, and a liquid crystal disposed between said pair of substrates, wherein said color filter is composed of a resin and a coloring material, and V and P have a relationship of 1/3≦P/V≦3/2, where V (gr) and P (gr) represent the respective contents of said resin and said coloring material that form said color filter.
Claim 2
Dependent Claim
82 words
A color liquid crystal device comprising a pair of substrates having electrodes, a color filter disposed between at least one of said pair of substrates and its electrode, and a liquid crystal disposed between said pair of substrates, wherein said color filter is composed of a resin and a coloring material, and V and P have a relationship of 1/3≦P/V≦3/2, where V (gr) and P (gr) represent the respective contents of said resin and said coloring material that form said color filter.
Claim 3
Dependent Claim
36 words
A color liquid crystal device according to claim 1, wherein said resin is an aromatic series polyamide resin or an aromatic series polyimide resin which has a photosensitive group in its molecule before it is hardened.
Claim 4
Dependent Claim
16 words
A color liquid crystal device according to claim 1, wherein said coloring material is a pigment.
Claim 5
Dependent Claim
53 words
A color liquid crystal device according to claim 3, wherein said pigment is a one composed of at least one compound selected from a group consisting of azo-pigments, condensed azo pigments, phthalocyanine pigments, indigo pigment, anthraquinone pigment, perylene pigment, perinon pigment, dioxazine pigment, quinacridone pigments, isoindolenone pigment, phthalon pigment and methine azomethine pigment.
Claim 6
Dependent Claim
16 words
A color liquid crystal device according to claim 3, wherein said pigment is a phthalocyanine pigment.
Claim 7
Dependent Claim
15 words
A color liquid crystal device according to claim 3, wherein said pigment is perylene pigment.
Claim 8
Dependent Claim
43 words
A color liquid crystal device according to claim 1, wherein said electrodes formed on said pair of substrates form intersections at a plurality of locations, and said intersections have first, second and third groups which have blue, green and red coloring materials, respectively.
Claim 9
Dependent Claim
41 words
A color liquid crystal device according to claim 7, wherein said first group having said blue coloring material, said second group having said green coloring material and said third group having said red coloring material are disposed in a striped pattern
Claim 10
Dependent Claim
41 words
A color liquid crystal device according to claim 7, wherein said first group having said blue coloring material, said second group having said green coloring material and said third group having said red coloring material are disposed in a mosaic pattern.
Claim 11
Dependent Claim
21 words
A color liquid crystal device according to claim 1, including a protecting film disposed between said color filter and the electrode.
Claim 12
Dependent Claim
19 words
A color liquid crystal device according to claim 1, including an orientation film formed adjacent to said liquid crystal.
Claim 13
Dependent Claim
56 words
A color liquid crystal device according to claim 11, wherein said orientation film is composed of at least one resin selected from a group consisting of polyvinyl alcohols, polyimides, polyamide-imides, polyesters, polycarbonates, polyvinyl acetals, a polyvinyl chloride, a polyvinyl acetate, polyamides, polystyrenes, cellulosic resins, melamine resins, urea resins, acrylic resins, photosensitive polyimides, photosensensitive polyamides and photoresists.
Claim 14
Dependent Claim
19 words
A color liquid crystal device according to claim 11, wherein said orientation film is composed of a polyvinyl alcohol.
Claim 15
Dependent Claim
18 words
A color liquid crystal device according to claim 11, wherein said orientation film is composed of a polyimide.
Claim 16
Dependent Claim
18 words
A color liquid crystal device according to claim 1, wherein said liquid crystal is a ferroelectric liquid crystal.
Claim 17
Dependent Claim
20 words
A color liquid crystal device according to claim 15, wherein said ferroelectric liquid crystal is a chiral smectic liquid crystal.
Claim 18
Dependent Claim
25 words
A color liquid crystal device according to claim 1, wherein at least one of said pair of substrates has at least one thin film transistor.
Claim 19
Dependent Claim
83 words
A color liquid crystal device comprising a pair of substrates having electrodes, a color filter disposed on the electrodes formed on at least one of said pair of substrates, and a liquid crystal disposed between said pair of substrates, wherein said color filter is composed of a resin and a coloring material, and V and P have a relationship of 1/3≦P/V≦3/2, where V (gr) and P (gr) are the respective contents of said resin and said coloring material that form said color filter.
Claim 20
Dependent Claim
83 words
A color liquid crystal device comprising a pair of substrates having electrodes, a color filter disposed on the electrodes formed on at least one of said pair of substrates, and a liquid crystal disposed between said pair of substrates, wherein said color filter is composed of a resin and a coloring material, and V and P have a relationship of 1/3≦P/V≦3/2, where V (gr) and P (gr) are the respective contents of said resin and said coloring material that form said color filter.
Claim 21
Dependent Claim
36 words
A color liquid crystal device according to claim 18, wherein said resin is an aromatic series polyamide resin or an aromatic series polyimide resin which has a photosensitive group in its molecule before it is hardened.
Claim 22
Dependent Claim
16 words
A color liquid crystal device according to claim 18, wherein said coloring material is a pigment.
Claim 23
Dependent Claim
53 words
A color liquid crystal device according to claim 20, wherein said pigment is a one composed of at least one compound selected from a group consisting of azo-pigments, condensed azo pigments, phthalocyanine pigments, indigo pigment, anthraquinone pigment, perylene pigment, perinon pigment, dioxazine pigment, quinacridone pigments, isoindolenone pigment, phthalon pigment and methine azomethine pigment.
Claim 24
Dependent Claim
16 words
A color liquid crystal device according to claim 21, wherein said pigment is a phthalocyanine pigment.
Claim 25
Dependent Claim
15 words
A color liquid crystal device according to claim 21, wherein said pigment is perylene pigment.
Claim 26
Dependent Claim
43 words
A color liquid crystal device according to claim 18, wherein said electrodes formed on said pair of substrates form intersections at a plurality of locations, and said intersections have first, second and third groups which have blue, green and red coloring materials, respectively.
Claim 27
Dependent Claim
41 words
A color liquid crystal device according to claim 24, wherein said first group having said blue coloring material, said second group having said green coloring material and said third group having said red coloring material are disposed in a striped pattern.
Claim 28
Dependent Claim
41 words
A color liquid crystal device according to claim 24, wherein said first group having said blue coloring material, said second group having said green coloring material and said third group having said red coloring material are disposed in a mosaic pattern.
Claim 29
Dependent Claim
21 words
A color liquid crystal device according to claim 18, including a protecting film disposed between said color filter and the electrode.
Claim 30
Dependent Claim
19 words
A color liquid crystal device according to claim 18, including an orientation film formed adjacent to said liquid crystal.
Claim 31
Dependent Claim
56 words
A color liquid crystal device according to claim 28, wherein said orientation film is composed of at least one resin selected from a group consisting of polyvinyl alcohols, polyimides, polyamide-imides, polyesters, polycarbonates, polyvinyl acetals, a polyvinyl chloride, a polyvinyl acetate, polyamides, polystyrenes, cellulosic resins, melamine resins, urea resins, acrylic resins, photosensitive polyimides, photosensensitive polyamides and photoresists.
Claim 32
Dependent Claim
19 words
A color liquid crystal device according to claim 28, wherein said orientation film is composed of a polyvinyl alcohol.
Claim 33
Dependent Claim
18 words
A color liquid crystal device according to claim 28, wherein said orientation film is composed of a polyimide.
Claim 34
Dependent Claim
18 words
A color liquid crystal device according to claim 18, wherein said liquid crystal is a ferroelectric liquid crystal.
Claim 35
Dependent Claim
20 words
A color liquid crystal device according to claim 32 wherein said ferroelectric liquid crystal is a chiral smectic liquid crystal.
Claim 36
Dependent Claim
25 words
A color liquid crystal device according to claim 18, wherein at least one of said pair of substrates has at least one thin film transistor.
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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) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |