PHOTOSENSITIVE RESIN COMPOSITION FOR COLOR FILTER
To provide a photosensitive resin composition for a color filter that allows high-definition photo-lithography even if an atomized organic pigment is finely dispersed at high concentration, and is provided for chromaticity adjustment associated with enlargement of a color reproduction region.SOLUTIO...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a photosensitive resin composition for a color filter that allows high-definition photo-lithography even if an atomized organic pigment is finely dispersed at high concentration, and is provided for chromaticity adjustment associated with enlargement of a color reproduction region.SOLUTION: The present invention is a photosensitive resin composition for a color filter that contains (A) an alkali-soluble resin obtained by causing (a) a dicarboxylic acid or a tricarboxylic acid or an acid anhydride thereof and (b) a tetracarboxylic acid or an acid dianhydride thereof to react with a reactant of an epoxy compound having two glycidyl ether groups derived from bisphenols and an unsaturated group-containing monocarboxylic acid, (B) a photo-polymerizable monomer having at least one ethylenically unsaturated bond, (C) a photo-polymerization initiator, and (D) an organic pigment. The content of (B) the photo-polymerizable monomer is 10 to 60 parts by mass based on 100 parts by mass of (A) the alkali-soluble resin. The content of (C) the photo-polymerization initiator is 2 to 40 parts by mass based on the total amount 100 parts by mass of (A) the alkali-soluble resin and (B) the photo-polymerizable monomer. The content of (D) the organic pigment is 30 to 55% by mass based on the total mass of a component that becomes a solid content after photo-curing.SELECTED DRAWING: None
【課題】微粒化された有機顔料を高濃度で微分散させても高精細なフォトリソグラフィーが可能であり、かつ、色再現領域の拡大に伴う色度調整にも対応できるカラーフィルター用感光性樹脂組成物を提供すること。【解決手段】本発明は、(A)ビスフェノール類から誘導される2個のグリシジルエーテル基を有するエポキシ化合物と不飽和基含有モノカルボン酸との反応物に対して、(a)ジカルボン酸若しくはトリカルボン酸又はその酸無水物、及び(b)テトラカルボン酸又はその酸二無水物を反応させて得られたアルカリ可溶性樹脂、(B)少なくとも1個のエチレン性不飽和結合を有する光重合性モノマー、(C)光重合開始剤、及び(D)有機顔料を含有するカラーフィルター用感光性樹脂組成物である。(A)アルカリ可溶性樹脂100質量部に対して、(B)光重合性モノマーが10〜60質量部であり、(A)アルカリ可溶性樹脂と(B)光重合性モノマーの合計量100質量部に対して、(C)光重合開始剤が2〜40質量部であり、光硬化後に固形分となる成分の全質量に対して、(D)有機顔料が30〜55質量%である。【選択図】なし |
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