Color filter, liquid crystal display element and method for manufacturing color filter

A technology of a color filter and a manufacturing method, applied in the field of color filters, capable of solving the problem of insufficient reliability of development resistance, poor reliability, poor heat resistance, hardening reaction of a coloring composition or a protective film or a spacer Sexual insufficiency and other issues

Active Publication Date: 2015-12-09
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, there is a problem in the coloring pattern formed using the coloring composition containing a dye that reliability, especially heat resistance, is inferior to that of a coloring pattern using a coloring composition containing a pigment.
In this case, conventional color filters have problems in that they cannot achieve sufficient performance in terms of reliability such as resistance to development or voltage retention when applied to liquid crystal display elements.
Reasons for such problems include insufficient hardening reactivity of low-temperature hardened coloring compositions, protective films, or spacers.

Method used

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  • Color filter, liquid crystal display element and method for manufacturing color filter
  • Color filter, liquid crystal display element and method for manufacturing color filter
  • Color filter, liquid crystal display element and method for manufacturing color filter

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0814] [[I] Synthesis of Alkali Soluble Resin (IA)]

[0815] 5 parts by mass of 2,2'-azobis(2,4-dimethylvaleronitrile) and 220 parts by mass of diethylene glycol methyl ethyl ether were placed in a flask equipped with a condenser and a stirrer. Next, 18 mass parts of methacrylic acid as (I-1) compound, 14 mass parts of 2-methylglycidyl methacrylate and 20 mass parts of glycidyl methacrylate as (1-2) compound were charged. Parts, 10 parts by mass of styrene as (I-4) compound, tricyclic methacrylic acid [5.2.1.0 2，6 ] 23 parts by mass of decane-8-yl ester and 15 parts by mass of methyl methacrylate, after nitrogen substitution, the temperature of the solution was raised to 70° C. while gently stirring, and the temperature was maintained for 5 hours to perform polymerization. Thus, a solution containing the alkali-soluble resin (IA) as a copolymer was obtained. The solid content concentration of the obtained polymer solution was 31.5%, and the Mw of the alkali-soluble resin (IA...

example 2

[0817] [[I] Synthesis of alkali-soluble resin (IB)]

[0818] 4 mass parts of AIBN and 300 mass parts of diethylene glycol methyl ethyl ether are charged into a flask with a condenser tube and a stirrer, followed by 23 mass parts of methacrylic acid as (I-1) compound, and 23 mass parts as (I-4) compound 10 parts by mass of styrene, 32 parts by mass of benzyl methacrylate, and 35 parts by mass of methyl methacrylate, further charged with 2.7 parts by mass of α-methylstyrene dimer, and stirred slowly to make the solution The temperature was raised to 80° C., kept at the temperature for 4 hours, then raised to 100° C., kept at the temperature for 1 hour, and polymerized to obtain a solution containing a copolymer. The solid content concentration of the obtained polymer solution was 24.9%, and Mw was 12,500. Next, 1.1 parts by mass of tetrabutylammonium bromide and 0.05 parts by mass of 4-methoxyphenol as a polymerization inhibitor were added to the obtained solution containing th...

example 3

[0820] [Preparation of coloring composition]

[0821] Ethylene oxide-modified dipentaerythritol hexaacrylate (II-1) as a polymerizable compound (II-1) and polyfunctional acrylic acid were mixed with 90 parts by mass of the alkali-soluble resin (IA) as a copolymer obtained in Example 1. A mixture of ester compounds (KAYARAD (registered trademark) DPHA-40H, Nippon Kayaku Co., Ltd.) (II-2) mixture (mixing ratio ((II-1) / (II-2)) = 4) 100 parts by mass, as [III] 2-methyl-1-(4-methylthienyl)-2-morpholinopropan-1-ketone (Irgacure907, Ciba Specialty Chemical Co., Ltd.) (III-1) 25 mass of polymerization initiator Parts, 100 parts by mass of red colorant (IV-1) containing red dye as [IV] colorant, pentaerythritol tetrakis (3-mercaptopropionate) ester (V-1) and 3-amino A mixture of ethyl benzenesulfonate (V-2) (mixing ratio ((V-1) / (V-2)=5)) 6 parts by mass, the alkali-soluble resin obtained in Example 2 as other alkali-soluble resin ( IB) 10 parts by mass. Next, cyclohexanone was used ...

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Abstract

PROBLEM TO BE SOLVED: To provide a color filter with high reliability due to low-temperature curing, and a liquid crystal device with the same. SOLUTION: A color filter 10 is manufactured using: a coloring pattern 6 including any of a diketopyrrolopyrrole based pigment, a zinc halide phthalocyanine based pigment, a triarylmethane dye and an azo dye; a protective film 8 obtained from a first radiation sensitive resin composition including a siloxane polymer; and a spacer 9 obtained from a second radiation sensitive resin composition including at least one of an alkali-soluble resin and a compound represented by a formula (1) or a formula (2). A liquid crystal device 1 is formed using the color filter 10. COPYRIGHT: (C)2013,JPO&INPIT

Description

technical field [0001] The invention relates to a color filter, a liquid crystal display element and a manufacturing method of the color filter. Background technique [0002] A liquid crystal display element is comprised, for example by interposing liquid crystal between a pair of substrates, such as a glass substrate. [0003] The liquid crystal display element may have an alignment film for liquid crystal alignment on the surfaces of the substrates sandwiching the liquid crystal. Conventionally, spherical or rod-shaped spacers made of glass, alumina, or resin have been arranged between substrates of liquid crystal display elements by spreading or the like, and the thickness of liquid crystals has been kept at a predetermined value of about 1 μm to 10 μm. The liquid crystal display element functions as a fine shutter for light emitted from a light source such as a backlight or external light. Furthermore, the liquid crystal display element displays light by partially tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20G02F1/1335G03F7/004G03F7/027
CPCG02B5/20G02B5/201G02F1/13G02F1/1303G03F7/004G03F7/0045G03F7/027G03F7/032G03F7/075
Inventor 铃木康伸本田晃久奥田务一户大吾
Owner JSR CORPORATIOON
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