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Coloring composition for color filter, color filter, and display element

A coloring composition and color filter technology, which is applied in the field of middle use, can solve problems such as pigment particle size, and achieve the effects of excellent chromaticity characteristics, excellent developability and storage stability

Active Publication Date: 2015-08-19
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the field of color filters used in liquid crystal display devices and solid-state imaging devices, the pigments used tend to be more and more finely divided in response to the demand for higher brightness and higher contrast.

Method used

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  • Coloring composition for color filter, color filter, and display element
  • Coloring composition for color filter, color filter, and display element
  • Coloring composition for color filter, color filter, and display element

Examples

Experimental program
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Effect test

Embodiment

[0199] Examples are given below to further specifically describe the embodiment of the present invention. However, the present invention is not limited to the following examples.

[0200]

[0201] Hereinafter, the abbreviations of the raw materials used in "(B) Synthesis of a copolymer" are as follows.

[0202] THF: Tetrahydrofuran

[0203] EEMA: 1-Ethoxyethyl methacrylate

[0204] MA: methacrylic acid

[0205] nBMA: n-butyl methacrylate

[0206] MMA: methyl methacrylate

[0207] AIBN: 2,2'-azobisisobutyronitrile

[0208] DAMA: Dimethylaminoethyl methacrylate

[0209] EHMA: 2-Ethylhexyl methacrylate

[0210] BzMA: benzyl methacrylate

[0211] PME-200: Methoxypolyethylene glycol monomethacrylate (manufactured by NOF Corporation)

Synthetic example 1

[0213] 600.30 g of THF, 10.80 g of lithium chloride (THF solution with a concentration of 3.63% by mass), and 3.84 g of diphenylethylene were added to the reaction vessel, and cooled to -60°C. Then, 9.60 g of n-butyllithium (15.36% by mass concentration of hexane solution) was added and aged for 10 minutes.

[0214] Next, a mixed solution of 103.84 g of nBMA and 13.45 g of EEMA was dripped over 30 minutes, and the reaction was continued for 15 minutes after the dripping. Then, it was measured by gas chromatography (hereinafter abbreviated as GC) to confirm the disappearance of the monomer.

[0215] Next, 32.25 g of DMMA was dripped, and reaction was continued for 30 minutes after dripping. Then, after measuring by GC and confirming the disappearance of the monomer, 3.42 g of methanol was added to stop the reaction.

[0216] 220 g of a propylene glycol monomethyl ether acetate solution having a concentration of 50% by mass of the obtained copolymer was heated at 160° C. to re...

Synthetic example 2

[0218] 55.7 g of THF, 4.65 g of lithium chloride (THF solution with a concentration of 4.54% by mass), and 0.45 g of diphenylethylene were added to the reaction vessel, and cooled to -60°C. Then, 1.22 g of n-butyllithium (15.36% by mass concentration of hexane solution) was added, followed by aging for 10 minutes.

[0219] Next, a mixed solution of 1.66 g of EEMA, 9.9 g of nBMA, and 4.14 g of MMA was dropped over 120 minutes, and the reaction was continued for 15 minutes after the dropwise addition. Then GC was performed to confirm the disappearance of the monomer.

[0220] Next, 3.96 g of DMMA was dripped, and reaction was continued for 30 minutes after dripping. Then, after measuring by GC and confirming the disappearance of the monomer, 0.41 g of methanol was added to stop the reaction.

[0221] 16.44 g of water was added to 65.64 g of a 25% by mass concentration of propylene glycol monomethyl ether acetate solution of the obtained precursor polymer, and the mixture was h...

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Abstract

The invention provides a coloring composition applied in a color filter, a color filter and a display element. The coloring composition which has excellent chroma features, development and storing stability comprises A a coloring agent including pigments, B a copolymer and C a cross-linking agent. The B copolymer comprises a repeating unit 1 illustrated in formula 1, a repeating unit 2 illustrated in formula 2 and a repeating unit 3 having an acidic group. Relative to the sum of the repeating units except the repeating unit 1, the repeating unit 2 has a copolymerization ratio being more than 75 weight percent and a ratio between weight average molecular weight and the number-average molecular weight ranging from 1.0 to 1.9. R1 represents a hydrogen atom or methyl. Z represents -N+R2R3R4Y- or -NR5R6. R2 to R4 mutually independently represent hydrogen atoms or alkyl and two more of them can form saturated heterocycles by mutually bonding. Y- represents a counterbalance anion. R5 and R6 mutually independently represent hydrogen atoms or alkyl and can form saturated heterocycles by mutually bonding. X1 represents divalent connecting groups. R7 represents a hydrogen atom or methyl. R8 represents aliphatic alkyl or alicyclic type alkyl.

Description

technical field [0001] The present invention relates to a coloring composition for a color filter, a color filter, and a display element. A coloring composition of a colored layer useful for the color filter used, a color filter having a colored layer formed using the coloring composition, and a display element having the color filter. Background technique [0002] When producing a color filter using a colored radiation-sensitive composition, it is known that after coating a pigment-dispersed colored radiation-sensitive composition on a substrate and drying it, the dried coating film is irradiated with radiation in a desired pattern shape (hereinafter referred to as "exposure") and develop to obtain pixels of each color (Patent Documents 1 and 2). Moreover, the method of forming a black matrix using the photopolymerizable composition in which carbon black was dispersed is also known (patent document 3). Furthermore, there is also known a method of obtaining pixels of each ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/033G03F7/004C09B67/20G02B5/20
Inventor 成濑秀则松本翔蓑轮贵树
Owner JSR CORPORATIOON