EP0320264A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Colour filter
Assignee: Fujifilm Holdings Corp
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Filing: 1988-12-08
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Granted: —
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Expires: 2008-12-08
Abstract
Abstract A color filter (2) prepared by providing red, green and blue picture elements (2a) and a black matrix (2b), all comprising a photosensitive resin and a pigment, on a transparent substrate (1) and a transparent electrode layer (2c) on the surface, wherein said photosensitive resin comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator composed of at least one member selected from the group consisting of halomethyloxadiazole compounds and halomethyl-triazine compounds. The color filter provided herein gives a pattern having a high precision and a high surface smoothness owing to the photosensitive resin and exhibits a good environment resistance owing to the pigment.
Inventors
- 👤 Tokihiko Shimizu
- 👤 Kesanao Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 08:27
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133514; G02F1/133516; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/121
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
72 words
A color filter prepared by providing red, green and blue picture elements and a black matrix, all comprising a photosensitive resin and a pigment, on a transparent substrate and providing a transparent electrode on the surface, wherein said photosensitive resin comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator composed of at least one member selected from the group consisting of halomethyloxadiazole type compounds and halomethyl-s-triazine type compounds.
Claim 2
Dependent Claim
72 words
A color filter prepared by providing red, green and blue picture elements and a black matrix, all comprising a photosensitive resin and a pigment, on a transparent substrate and providing a transparent electrode on the surface, wherein said photosensitive resin comprises a polyfunctional acrylate monomer, an organic polymer binder and a photopolymerization initiator composed of at least one member selected from the group consisting of halomethyloxadiazole type compounds and halomethyl-s-triazine type compounds.
Claim 3
Dependent Claim
53 words
A color filter according to Claim 1, wherein said organic polymer binder is consituted of a copolymer having, as monomer units, an unsaturated organic acid compound such as acrylic acid, methacrylic acid and the like and an unsaturated organic acid ester compound such as methyl acrylate, ethyl methacrylate, benzyl methacrylate and the like.
Claim 4
Dependent Claim
14 words
A color filter according to Claim 1, wherein said pigment is a processed pigment.
Claim 5
Dependent Claim
47 words
A color filter according to Claim 3, wherein said processed pigment is a powdery or pasty product prepared by finely dispersing a pigment into at least one resin selected from the group consisting of acrylic resin, vinyl chloride-vinyl acetate copolymer, maleic acid resin and ethyl cellulose resin.
Claim 6
Dependent Claim
46 words
A color filter according to Claim 1, wherein said red pigment is consituted of an anthraquinone type pigment alone, a perylene type pigment alone, or a mixture consisting of at least one of them and a disazo type yellow pigment or an isoindoline type yellow pigment.
Claim 7
Dependent Claim
35 words
A color filter according to Claim 1, wherein said green pigment is constituted of a halogenated phthalocyanine type pigment alone or its mixture with a disazo type yellow pigment or an isoindoline type yellow pigment.
Claim 8
Dependent Claim
28 words
A color filter according to Claim 1, wherein said blue pigment is constituted of a phthalocyanine type pigment alone or its mixture with a dioxazine type violet pigment.
Claim 9
Dependent Claim
32 words
A color filter according to Claim 1, wherein the pigment of black matrix is constituted of at least one member selected from the group consisting of carbon, titanium oxide and iron oxide.
Claim 10
Dependent Claim
49 words
A color filter according to Claim 1, wherein said red pigment is constituted of C. I. Pigment Red 177 alone, C. I. Pigment Red 155 alone or a mixture consisting of at least one member of them and C. I. Pigment Yellow 83 or C. I. Pigment Yellow 139.
Claim 11
Dependent Claim
55 words
A color filter according to Claim 1, wherein said green pigment is consituted of C. I. Pigment Green 7 alone, C. I. Pigment Green 36 alone, C. I. Pigment Green 37 alone or a mixture consisting of at least one member of them and C. I. Pigment Yellow 83 or C. I. Pigment Yellow 139.
Claim 12
Dependent Claim
43 words
A color filter according to Claim 1, wherein said blue pigment is constituted of C. I. Pigment Blue 15:3 alone, C. I. Pigment Blue 15:6 alone or a mixture consisting of at least one member of them and C. I. Pigment Violet 23.
Claim 13
Dependent Claim
27 words
A color filter according to Claim 1, wherein said pigment has a mean particle diameter smaller than the wavelength of visible light (400 nm to 700 nm).
Claim 14
Dependent Claim
31 words
A color filter according to Claim 1, wherein the pigment concentration in the total solid component in each color is in the range from 10% by weight to 45% by weight.
Claim 15
Dependent Claim
19 words
A color filter according to Claim 1, wherein the total solid component of each color contains an ionic impurity-scavenger.
Claim 16
Dependent Claim
19 words
A color filter according to Claim 14, wherein said ionic impurity-scavenger is an organic compound having an epoxy group.
Claim 17
Dependent Claim
32 words
A color filter according to Claim 14, wherein the concentration of said ionic impurity scavenger in the total solid component is in the range from 0.1% by weight to 10% by weight.
References Cited (Backward Citations)
No citation records indexed.
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