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Radiation sensitive composition and method for the preparation of the same

A radiation-sensitive, composition-based technology, applied in the field of color liquid crystal display elements, can solve the problems affecting the light transmittance and contrast, which are unsatisfactory, and the light transmittance and contrast of pixels cannot reach a sufficient level.

Active Publication Date: 2006-04-12
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Typically, red and green pixels contain yellow pigments, which are known to greatly affect light transmission and contrast
In the past, C.I. Pigment Yellow 83 was mainly used as a yellow pigment. The light transmittance and contrast of the pixels obtained from the coloring radiation composition containing C.I. Pigment Yellow 83 were not at a sufficient level. Graphics are not yet satisfactory

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment

[0223] Hereinafter, the embodiments of the present invention will be further specifically described through examples. However, the present invention is not limited to the following examples.

Synthetic example 1

[0225] Add 1 weight part of 2,2'-azobis(2,4-dimethylvaleronitrile) and 200 weight parts of diethylene glycol monomethyl ether acetate in the flask provided with condenser tube and stirrer, then , add 15 parts by weight of methacrylic acid, 25 parts by weight of N-phenylmaleimide, 35 parts by weight of benzyl methacrylate, 10 parts by weight of glycerol monomethacrylate, 15 parts by weight of styrene and α - 2.5 parts by weight of methyl styrene dimer (chain transfer agent), after substituting nitrogen gas, stirring slowly, raising the temperature of the reaction solution to 80° C., maintaining the temperature, and polymerizing for 3 hours. Afterwards, the temperature of the reaction solution was raised to 100°C, 0.5 parts by weight of 2,2'-azobis(2,4-dimethylvaleronitrile) was added, and the polymerization was continued for 1 hour, thereby obtaining a resin solution (solid content concentration = 30% by weight). Mw=30,000 and Mn=10,000 of the obtained resin. This resin solut...

Embodiment 1

[0227] Preparation of Pigment Dispersion

[0228] (A) Pigment: 40 parts by weight of a 30 / 70 (weight ratio) mixture of C.I. Pigment Green 36 and C.I. Pigment Yellow 219, dispersant: BYK 2001 (Disperbyk: manufactured by BYK CHEMIE (BYK), solid content concentration 45.1% by weight ) 10 parts by weight (approximately 4.51 parts by weight in terms of solid content), and a solvent: a mixture consisting of 150 parts by weight of 3-ethoxy ethyl propionate was mixed and dispersed for 12 hours using a bead mill to prepare a pigment dispersion (P1).

[0229] As for the pigment dispersion (P1), the average particle diameter of the pigment was measured by the dynamic light scattering method and found to be 250 nm.

[0230] Preparation of liquid composition

[0231] Pigment dispersion (P1) 600 parts by weight, (B) alkali-soluble resin: 200 parts by weight of resin solution (B-1), (C) multifunctional monomer: 60 parts by weight of dipentaerythritol hexaacrylate, (D) Radical generato...

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PUM

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Abstract

A radiation-sensitive composition for the color filter contains (A) a pigment, (B) an alkali soluble resin, (C) a polyfunctional monomer, and (D) a radiation-sensitive radical generating agent. (A) The pigment contains 5 wt% or greater of a C.I. pigment yellow 219, and an average particle radius r (unit nm) of (A) the pigment is more than or equal to 50 and less than or equal to 300.

Description

technical field [0001] The invention relates to a radiation-sensitive composition and its preparation method, a color filter and a color liquid crystal display element. More specifically, it relates to a radiation-sensitive composition used in the manufacture of color filters used in transmissive or reflective color liquid crystal devices, color picture tube elements, etc. A color filter for a formed pixel, and a color liquid crystal display element including the color filter. Background technique [0002] As a color filter formed using a colored radiation-sensitive composition, known methods (refer to JP-A-2-144502 and JP-A-3-53201) are: forming a desired color filter on a substrate or in advance. On the substrate of the patterned light-shielding layer, a coating film of the colored radiation-sensitive composition is formed, and the radiation is irradiated through a photomask with a predetermined pattern (hereinafter referred to as "exposure", developed and dissolved to re...

Claims

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Application Information

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IPC IPC(8): G02B5/23G02B1/04G02F1/1335
CPCG02B5/223G03F7/0007G03F7/0045G03F7/027
Inventor 绫部真嗣河本达庆长塚富雄
Owner JSR CORPORATIOON
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