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

A color filter and coloring pattern technology, which is applied in the field of color filters, can solve the problems of coloring pattern deterioration, liquid crystal display element display quality degradation, and loss of color characteristics.

Active Publication Date: 2016-07-06
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 conventional coloring composition containing the dye that the reliability is poor compared with the coloring pattern using the coloring composition containing the pigment.
[0031] First, fading of the color filter occurs, thereby impairing the superiority of the color characteristics in the characteristics of the color filter including the coloring pattern using the dye
[0032] Second, when the dye in the colored pattern is decomposed, there is a phenomenon that highly polar impurities are generated, and the impurities are dissolved into the liquid crystal in the liquid crystal panel to reduce the display quality of the liquid crystal display element
As for the heating in this hardening step, when there is a colored pattern formed using a colored composition containing a dye in the lower layer, there is a fear of causing deterioration of the colored pattern.

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

[0773] [[I] Synthesis of Alkali Soluble Resin (IA)]

[0774] 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

[0776] [[I] Synthesis of alkali-soluble resin (IB)]

[0777] 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

[0779] [Preparation of coloring composition]

[0780] 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

The present invention provides a low-temperature hardened high-reliability color filter and a manufacturing method thereof, and provides a liquid crystal display element using the color filter. The color filter 20 includes a colored pattern 6, a protective film 8, and an alignment film 12. The colored pattern 6 includes a diketopyrrolopyrrole pigment, a zinc halide phthalocyanine pigment, a triarylmethane dye, and an azo dye any of the above, the protective film 8 is formed by a radiation-sensitive resin composition comprising an alkali-soluble resin and a compound of the following formula (1) or the following formula (2), and the alignment film 12 has been subjected to photo-alignment treatment Alignment film 12 with low polarity structure. The liquid crystal display element 1 is manufactured using the color filter 20 .

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] The liquid crystal display element includes a liquid crystal panel configured by sandwiching liquid crystal between a pair of substrates such as glass substrates. An alignment film may be provided on the surface of the substrate sandwiching the liquid crystal. The ability to control the alignment of liquid crystals has been imparted to the alignment film by using a chemically stable and high heat-resistant organic film such as polyimide, and rubbing in one direction with cloth such as nylon or polyester. friction treatment. [0003] Between a pair of substrates of a liquid crystal display element, spherical or rod-shaped spacers made of glass, alumina, or resin are arranged by spreading or the like to keep the thickness of the liquid crystal at a predetermined value of about 1 μm to 20 μm. In a liqui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20G02F1/1335G02F1/1337G03F7/004G03F7/027
CPCC08F2/50C08F220/32C08G73/1025C08K5/0041C08L79/08C09B11/04C09B47/085C09B57/004C08F220/325G02B5/223G02F1/133516G02F1/133723
Inventor 一戸大吾米田英司
Owner JSR CORPORATIOON
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