Curable composition and color filter
AssigneeFUJIFILM Corporation
InventorsSuguru Samejima, Takashi Kawashima, Yousuke Murakami
Life of this patent
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Abstract
Provided is a colored curable composition having a good chemical resistance, and capable of forming a good colored layer pattern, the colored curable composition including an epoxy group-containing compound, and a phthalocyanine dye having a functional group capable of forming a covalent bond by a reaction with the epoxy group under heating.
Claims13
A colored curable composition comprising an epoxy group-containing compound and a phthalocyanine dye having a functional group capable of forming a covalent bond by a reaction with the epoxy group under heating,
- wherein the epoxy group-containing compound has an epoxy equivalent of 500 g/eq or less;
- the epoxy group-containing compound is contained in an amount of 5 to 40% by mass, relative to the total solids content of the colored curable composition;
- the phthalocyanine dye is contained in an amount of 20 to 70% by mass, relative to the total solids content of the colored curable composition;
- and
- the number of functional groups possessed by the phthalocyanine dye and the epoxy equivalent of the epoxy group-containing compound satisfy the following relation:
- (epoxy equivalent of the epoxy group-containing compound/number of functional groups possessed by phthalocyanine dye)=25 g/eq or more, and 500 g/eq or less.
A method for manufacturing a color filter, the method comprising:
- forming a colored layer by curing a colored curable composition which contains a phthalocyanine dye having a functional group capable of forming a covalent bond by a reaction with an epoxy group under heating, and an epoxy group-containing compound;
- forming a photoresist layer on the colored layer;
- obtaining a resist pattern by patterning the photoresist layer by exposure and development;
- and
- dry-etching the colored layer using the resist pattern as an etching mask,
- wherein the epoxy group-containing compound has an epoxy equivalent of 500 g/eq or less;
- the epoxy group-containing compound is contained in an amount of 5 to 40% by mass, relative to the total solids content of the colored curable composition;
- the phthalocyanine dye is contained in an amount of 20 to 70% by mass, relative to the total solids content of the colored curable composition;
- and
- the number of functional groups possessed by the phthalocyanine dye and the epoxy equivalent of the epoxy group-containing compound satisfy the following relation:
- (epoxy equivalent of the epoxy group-containing compound/number of functional groups possessed by phthalocyanine dye)=25 g/eq or more, and 500 g/eq or less.
Dependencies are inferred from the claim text.