Curable composition and color filter

Patent metadata

Field	Value
Publication number	US-10175573-B2
Application number	US-201514799690-A
Country	US
Kind code	B2
Filing date	Jul 15, 2015
Priority date	Feb 8, 2013
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

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.

First claim

What is claimed is:

1. 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.

2. The colored curable composition of claim 1 , wherein the phthalocyanine dye is a halogenated phthalocyanine dye.

3. The colored curable composition of claim 2 , wherein the halogenated phthalocyanine dye is represented by the formula (1-2);

wherein each of Z 1 to Z 16 represents a hydrogen atom, a substituent or a halogen atom, at least one of Z 1 to Z 16 represents a halogen atom, and at least other one of Z 1 to Z 16 represents a substituent having the functional group; M represents two hydrogen atoms, a metal atom, a metal oxide or a metal halide.

4. The colored curable composition of claim 2 , wherein the epoxy group-containing compound has, per molecule, two or more epoxy groups.

5. The colored curable composition of claim 1 , wherein the phthalocyanine dye has, per molecule, one to four functional groups capable of forming a covalent bond by a reaction with the epoxy group under heating.

6. The colored curable composition of claim 1 , wherein the epoxy group-containing compound has, per molecule, two or more epoxy groups.

7. The colored curable composition of claim 1 , further comprising a yellow coloring matter.

8. The colored curable composition of claim 7 , which comprises 50 to 90% by mass of a colorant containing the phthalocyanine dye and the yellow coloring matter, relative to total solids of the colored curable composition.

9. A cured film obtainable by curing a colored curable composition described in claim 1 .

10. A color filter having a colored layer obtainable by using the colored curable composition described in claim 1 .

11. The color filter of claim 10 , wherein the colored layer has a thickness of 0.1 to 0.8 μm.

12. A device comprising the color filter described in claim 10 , wherein the device is selected from a liquid crystal display device, an organic electroluminescence element, and a solid-state image sensing device.

13. 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.

Assignees

• Fujifilm Corp

Inventors

• SAMEJIMA Suguru
• Kawashima Takashi
• Murakami Yousuke

Classifications

• C08K5/0041

  Optical brightening agents, organic pigments · CPC title

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• G03F7/105

  having substances, e.g. indicators, for forming visible images · CPC title

• C09B67/0033

  Blends of pigments; Mixtured crystals; Solid solutions · CPC title

• G03F7/0007 Primary

  Filters, e.g. additive colour filters; Components for display devices · CPC title