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Radiation-ray sensitive composition for colour-filtering piece, colour filtering piece and colour liquid crystal display device

A technology of composition and color filter, which is applied in the direction of optical filter, nonlinear optics, and photosensitive materials used in optomechanical equipment, etc., and can solve problems such as damaged pattern surface smoothness, increased viscosity over time, and pattern defects , to achieve good storage stability and good adhesion

Active Publication Date: 2005-10-05
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the existing colored radiation-sensitive composition forms a pixel pattern with a short exposure time (i.e. low exposure amount), sometimes the defect or peeling of the pattern occurs during development, which does not necessarily meet the requirements.
In addition, in the case of a low exposure amount, the coating film composed of the colored radiation-sensitive composition is not sufficiently cured, and the surface smoothness of the pattern is significantly impaired, resulting in problems such as poor alignment of liquid crystals.
Moreover, the existing colored radiation-sensitive compositions generally have a tendency to increase in viscosity over time, and there is a problem that they cannot be stored for a long time after preparation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0232] -Manufacturing method of radiation-sensitive composition for color filter-

[0233] The preparation method of the radiation-sensitive composition for color filters of the present invention is not particularly limited, but it is preferred to disperse (A) pigment in a medium containing (B) dispersant, (C) alkali-soluble resin and (F) solvent in advance. steps for preparation.

[0234] Hereinafter, the step of dispersing the (A) pigment in the above-mentioned medium in advance is referred to as a "preliminary dispersion step", and the dispersion obtained by dispersing the (A) pigment in the above-mentioned medium in advance is referred to as a "preliminary dispersion".

[0235] The amount of the (C) alkali-soluble resin used in the preliminary dispersion step is preferably 5 to 100% by weight, more preferably 10 to 50% by weight relative to the amount of the (C) alkali-soluble resin used in the radiation-sensitive composition for color filters. In this case, when the usag...

Embodiment 1

[0278]15 parts by weight of a mixture of C.I. Pigment Red 254 / C.I. Pigment Red 177=80 / 20 (weight ratio) as (A) pigment, and 5 parts by weight of Disperbyk-2001 (solid content concentration: 45.1% by weight) as (B) dispersant parts (in terms of solid content, about 2.26 parts by weight), methacrylic acid / N-phenylmaleimide / styrene / benzyl methacrylate copolymer as (C) alkali-soluble resin (copolymerization weight ratio =20 / 30 / 20 / 30, Mw=9,500, Mn=5,000) 6 parts by weight and 37 parts by weight of propylene glycol monomethyl ether acetate and 37 parts by weight of ethyl 3-ethoxy propionate as the (F) solvent Parts were treated with a bead mill to prepare a preliminary dispersion (R1).

[0279] Then, 100 parts by weight of the preliminary dispersion liquid (R1), methacrylic acid / succinic acid mono(2-methacryloyloxyethyl) ester / N-phenylmaleimide as (C) alkali-soluble resin were mixed. Amine / styrene / benzyl methacrylate copolymer (copolymerization weight ratio=25 / 10 / 30 / 20 / 15, Mw=12,00...

Embodiment 2

[0281] 15 parts by weight of a mixture of C.I. Pigment Green 36 / C.I. Pigment Yellow 138 / C.I. Pigment Yellow 150=50 / 40 / 10 (weight ratio) as (A) pigment, 7.5 parts by weight of Disperbyk-2001 as (B) dispersant (about 3.38 parts by weight in terms of solid content), as (C) alkali-soluble resin, methacrylic acid / ω-carboxydicaprolactone monoacrylate / N-phenylmaleimide / styrene / benzyl 4 parts by weight of methacrylate / glycerol monomethacrylate copolymer (copolymerization weight ratio=15 / 10 / 20 / 10 / 35 / 10, Mw=6,000, Mn=3,000) and propylene glycol mono 73.5 parts by weight of methyl ether acetate were treated in the same manner as in Example 1 to prepare a preliminary dispersion (G1).

[0282] Then, 100 parts by weight of the preliminary dispersion liquid (G1), methacrylic acid / N-phenylmaleimide / styrene / benzyl methacrylate / glycerin monomethacrylic acid as the (C) alkali-soluble resin were mixed 5 parts by weight of ester copolymer (copolymer weight ratio = 15 / 25 / 15 / 35 / 10, Mw = 13,500, Mn ...

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Abstract

The present invention provides a radiation sensitive composition for a color filter comprising (A) a pigment, (B) a dispersant, (C) an alkali-soluble resin, (D) a polyfunctional monomer, (E) a photopolymerization initiator and (F) a solvent, wherein the dispersant (B) comprises an acrylic copolymer obtained through living anionic polymerization and having an amine value (unit; mgKOH / g) and an acid value (unit; mgKOH / g) each greater than 0.

Description

technical field [0001] The invention relates to a radiation-sensitive composition for color filters, a color filter and a color liquid crystal display device. Specifically, the present invention relates to a radiation-sensitive composition for color filters that can be used to manufacture color filters, a color filter formed from the composition, and a color liquid crystal display device having the color filter, wherein the color filter Sheets are used in transmissive or reflective color liquid crystal display devices, color imaging tube components, and the like. Background technique [0002] It is known that when a colored radiation-sensitive composition is used to manufacture a color filter, a film of the colored radiation-sensitive composition is usually formed on a substrate or a substrate on which a light-shielding layer of a desired pattern is formed in advance, and the color filter is passed through a color filter having a desired pattern shape. A method in which a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/004G02B5/20G02F1/1335G03F7/033
CPCC07D233/64C08F2/46G03F7/0007G03F7/004G03F7/0045G03F7/027G03F7/033G03F7/0382G03F7/0397
Inventor 沼田淳小林和博森下聪
Owner JSR CORPORATIOON
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