EP0371398A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Color filter for multi-color liquid-crystal display panel
Assignee: Toppan Inc
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Filing: 1989-11-23
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Granted: —
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Expires: 2009-11-23
Abstract
Abstract A color filter for use in a liquid-crystal display panel structure, including a transparent substrate having a surface portion, and a multiplicity of filter elements distributed in a predetermined pattern on the surface portion of the substrate, each of the filter elements being formed of a photosetting colored filter composition containing an acrylic resin, a coloring compound and a dispersant. In this color filter according to the present invention, the dispersant preferably includes a derivative of an organic colorant. A color filter according to the present invention may further include a transparent overcoat of a synthetic resin covering the filter elements.
Inventors
- 👤 Toyoaki Toppan Print. Co. Ltd. Techn. Res. Sawada
- 👤 Hisao Toppan Print. Co. Ltd. Techn. Res. Hoshi
- 👤 Hiroki Toppan Print. Co. Ltd. Techn. Res. Endo
- 👤 Mizuhiro Toppan Print. Co. Ltd. Techn. Res. Tani
- 👤 Makoto Toppan Print. Co. Ltd Techn. Res. Sakagawa
- 👤 Takeo Toppan Print. Co. Ltd. Techn. Res. Sugiura
- 👤 Masaji Toppan Print. Co. Ltd Techn. Res. Yonezawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 22:57
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; C; C09; C09B; C09B69/00; G02F1/133509; G02F1/133514; G02F1/133516; G03; G03F; G03F7/00; G03F7/0005; G03F7/0007; G02F1/133519
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
62 words
A color filter for use in a liquid-crystal display panel structure, comprising a) a transparent substrate having a surface portion, and b) a multiplicity of filter elements distributed in a predetermined pattern on said surface portion of said substrate, each of the filter elements being formed of a photosetting colored filter composition containing an acrylic resin, a coloring compound and a dispersant.
Claim 2
Dependent Claim
62 words
A color filter for use in a liquid-crystal display panel structure, comprising a) a transparent substrate having a surface portion, and b) a multiplicity of filter elements distributed in a predetermined pattern on said surface portion of said substrate, each of the filter elements being formed of a photosetting colored filter composition containing an acrylic resin, a coloring compound and a dispersant.
Claim 3
Dependent Claim
20 words
A color filter as set forth in claim 1, in which said dispersant comprises a derivative of an organic colorant.
Claim 4
Dependent Claim
55 words
A color filter as set forth in claim 1, in which said acrylic resin comprises structural units selected from the group expressed by the general formula: wherein R, represents a hydrogen atom or a methyl group and R 2 represents an alkyl, an isoalkyl group, a phenyl group, a cyclohexyl group, or a tetrahydrofurfuryl group.
Claim 5
Dependent Claim
48 words
4 . A color filter as set forth in claim 1, in which said acrylic resin comprises copolymers having structural units expressed by the general formula: wherein R 1 represents a hydrogen atom or a methyl group. wherein R 2 represents a hydrogen atom or a methyl group.
Claim 6
Dependent Claim
48 words
5 . A color filter as set forth in claim 1, in which said acrylic resin comprises copolymers having structural units expressed by the general formula: wherein R 3 represents a hydrogen atom or a methyl group. wherein R 4 represents a hydrogen atom or a methyl group.
Claim 7
Dependent Claim
57 words
A color filter as set forth in claim 1, in which said acrylic resin comprises copolymers having structural units expressed by the general formula: wherein R s represents a hydrogen atom or a methyl group. wherein R 6 represents a hydrogen atom or a methyl group. wherein R 7 represents a hydrogen atom or a methyl group.
Claim 8
Dependent Claim
35 words
A color filter as set forth in claim 1, in which said acrylic resin comprises copolymers having structural units expressed by the general formula: wherein R 8 represents a hydrogen atom or a methyl group.
Claim 9
Dependent Claim
60 words
8 . A color filter as set forth in claim 1, in which said acrylic resin comprises copolymers having structural units expressed by the general formula: wherein R s represents a hydrogen atom or a methyl group. wherein R 1 represents a hydrogen atom or a methyl group and Ri represents an alkyl group having 1 to 5 carbon atoms.
Claim 10
Dependent Claim
127 words
A color filter as set forth in claim 1, in which said coloring compound comprises a pigment selected from the group consisting of the following pigments denoted in terms of the Color Index (C.I.) Numbers: Pigment Yellow: C.I. Nos. 20, 24, 86, 93, 109, 110, 117, 125, 137, 138, 147, 148, 153, 154, 166, 168 Pigment Orange: C.I. Nos. 36, 43, 51, 55, 59, 61 Pigment Red: C.I. Nos. 9, 97, 122, 123, 149, 168, 177, 180, 192, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240 Pigment Violet: C.I. Nos. 19, 23, 29, 30, 37, 40, 50 Pigment Blue: C.I. Nos. 15, 15:6, 22, 60, 64 Pigment Green: C.I. Nos. 7, 36 Pigment Brown: C.I. Nos. 23, 25, 26, and Pigment Black: C.I. No. 7.
Claim 11
Dependent Claim
44 words
10 . A color filter as set forth in claim 2, in which said organic colorant is selected from the group consisting of azo compounds, phthalocyanine compounds, quinacridone compounds, anthraquinone compounds, perylene, perinone, thioindigo compounds, dioxazine compounds, isoindolenone, quinophthalone, triphenylmethane, and various metal complexes.
Claim 12
Dependent Claim
28 words
A color filter as set forth in claim 1, in which said colored filter composition contains 5 per cet to 30 per cent by weight of acrylic resin.
Claim 13
Dependent Claim
23 words
A color filter as set forth in claim 1, in which said colored filter composition has further contained therein a photosensitive cross-linking compound.
Claim 14
Dependent Claim
27 words
13 . A color filter as set forth in claim 1, in which said colored filter composition has further contained therein acryl monomers and a photopolymerization initiator.
Claim 15
Dependent Claim
102 words
A process of preparing a color filter for use in a liquid-crystal display panel structure, comprising the steps of a) mixing and dissolving monomers of an acrylic resin, a coloring compound and a dispersant in a solvent, b) adding a photosetting substance to the resultant solution to produce a photosetting colored filter composition, c) forming a layer of said colored filter composition on the surface of a transparent substrate, d) selectively exposing said layer to light and developing the resultant layer for forming a multiplicity of discrete filter regions of photoset colored filter composition distributed in a desired pattern on said surface.
Claim 16
Dependent Claim
102 words
A process of preparing a color filter for use in a liquid-crystal display panel structure, comprising the steps of a) mixing and dissolving monomers of an acrylic resin, a coloring compound and a dispersant in a solvent, b) adding a photosetting substance to the resultant solution to produce a photosetting colored filter composition, c) forming a layer of said colored filter composition on the surface of a transparent substrate, d) selectively exposing said layer to light and developing the resultant layer for forming a multiplicity of discrete filter regions of photoset colored filter composition distributed in a desired pattern on said surface.
References Cited (Backward Citations)
No citation records indexed.
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