Curable composition and color filter

A curable composition and compound technology, applied in the field of curable compositions, can solve problems such as surface roughness, insufficient NMP resistance, non-NMP resistance storage stability, etc., achieve high contrast, high NMP tolerance, liquid Good storage stability

Inactive Publication Date: 2011-01-26
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this photosensitive composition, there is a problem of insufficient NMP resistance in areas where the pigment concentration is high
[0007] In addition, Patent Document 2 proposes a photosensitive composition for color filters containing an epoxy resin, but it is by no means a composition excellent in NMP resistance, storage stability with liquid, and coloring.
[0008] Furthermore, in this photosensitive composition, there is still a problem that areas with a high pigment concentration or colored pixels produced in the nex

Method used

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  • Curable composition and color filter
  • Curable composition and color filter
  • Curable composition and color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0360] The components of the following composition were further added to the obtained pigment dispersion liquid 1, and the curable composition (color resist liquid) of this invention was prepared after stirring and mixing.

[0361] ・(B) Alkali-soluble resin: Copolymer of benzyl methacrylate and methacrylic acid (= 70 / 30 [molar ratio]) Weight average molecular weight = 30,000 20.8 parts

[0362] ・(C) Polymeric compound: 20 parts of DPHA manufactured by Nippon Kayaku Co., Ltd.

[0363] (D) Polymerization initiator: 3 parts of 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole

[0364] (E) Polymerization initiator: 3 parts of 4-[o-bromo-p-N,N-bis(ethoxycarbonyl)aminophenyl]-2,6-bis(trichloromethyl)-s-triazine

[0365] ・(F) Multifunctional epoxy compound: 5 parts of EPICLON695 manufactured by DIC Corporation

[0366] ·Diethylaminobenzophenone 0.5 parts

[0367] ·N-Phenylmercaptobenzimidazole 0.5 parts

[0368] ・Surfactant: (structure 1 below) 1.0 parts

[0369] 400 par...

Embodiment 2～16 and comparative example 1～6

[0375] In the composition of the curable composition of Example 1, the type and amount of the pigment, the amount of the alkali-soluble resin, the amount of the polymerizable compound, the type and amount of the polymerization initiator, and the amount of the polyfunctional epoxy compound are as follows: 2 was changed to prepare curable compositions of Examples 2-16 and Comparative Examples 1-6.

[0376] [Table 2]

[0377]

[0378] In Table 2, *1 means that the same compound as in Example 1 was used. *2 to *6 are as follows.

[0379] *2: 2,2'-bis(o-chlorophenyl)-4,4',5,5'-tetrakis-(3,4-dimethoxyphenyl)biimidazole

[0380] *3: Ciba Specialty Chemicals Co., Ltd. oxime-based initiator OXE-01 (oxime 1 shown below)

[0381] *4: Oxime 3 (a compound of 5'-2 of the above-mentioned exemplified compounds)

[0382] *5: Oxime 4 (the 5'-3 compound of the above-mentioned exemplified compounds)

[0383] *6: Difunctional epoxy compound EPICLON850-LC manufactured by DIC Corporation

...

Embodiment 33

[0394] In Example 1, (F) polyfunctional epoxy compound EPICLON695 was changed into EHPE-3150 (Daicel Chemical Industry Co., Ltd. polyfunctional epoxy resin) to prepare a curable composition, and it evaluated similarly to Example 1. The results are shown in Table 3.

[0395] Table 3 summarizes the results of the following evaluations using the obtained colored substrates. In addition, curable compositions are used for liquid preservation. All other evaluations were performed using non-TFT color filter substrates.

[0396] 〔NMP tolerance〕

[0397] [Chroma change]

[0398] After measuring the spectral characteristics of each colored substrate with a spectrophotometer MCPD-2000 manufactured by Otsuka Electronics Co., Ltd., each test piece was immersed in a 50° C. NMP (N-methylpyrrolidone) solution for 10 minutes. Next, after rinsing with pure water and drying at 85°C for 60 minutes, the spectral characteristics were measured again, and the degree of chromaticity change by NMP ...

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PUM

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Abstract

Disclosed is a curable composition comprising (A) a coloring agent, (B) an alkali-soluble resin, (C) a photopolymerizable compound, (D) a hexaarylbiimidazole-type polymerization initiator, (E) at least one component selected from an oxime-type initiator and a triazine-type initiator, and (F) a multifunctional epoxy compound having a functionality of 4 or more, wherein the content of the multifunctional epoxy compound (F) and the content of the coloring agent (A) are 2 to 20% by mass and 25 to 50% by mass, respectively, relative to the total solid content.

Description

technical field [0001] The present invention relates to a curable composition. Specifically, it relates to a curable composition which can be suitably used for production of a color filter, and a color filter using the curable composition. Background technique [0002] Generally, a liquid crystal display device is manufactured by separately fabricating a color filter substrate and a TFT (Thin-Film-Transistor) substrate, and laminating liquid crystals therebetween. At this time, the color filter substrate is coated with an alignment film such as polyimide for aligning liquid crystals on the colored layer. Therefore, the colored layer needs to be resistant to highly polar solvents such as NMP (N-methyl-pyrrolidone) contained in the polyimide resin. [0003] In addition, the coloring layer independently forms pixels for each color in a stripe or mosaic shape. Therefore, unevenness is formed on the surface of the colored layer, so a resin film ((hereinafter sometimes referred ...

Claims

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Application Information

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IPC IPC(8): C08G59/32C08K5/3417C08L63/04
CPCC08L63/04C08G59/686C08G59/3218C08K5/3445
Inventor 中村秀之池田秀夫根本洋一冈部孝太郎
Owner FUJIFILM CORP
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