Curable composition, film, structural body, color filter, solid-state imaging element, and image display device

Patent metadata

Field	Value
Publication number	US-11965047-B2
Application number	US-202117357929-A
Country	US
Kind code	B2
Filing date	Jun 24, 2021
Priority date	Feb 1, 2019
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

Provided are a curable composition including a pigment, a resin, a polymerizable compound, a photopolymerization initiator, and a solvent; a film formed of the curable composition; a structural body; a color filter; a solid-state imaging element; and an image display device. The resin includes a resin A which includes a repeating unit having a graft chain of a poly(meth)acrylate structure and a repeating unit having an acid group, and the graft chain of a poly(meth)acrylate structure includes a repeating unit represented by the following formula. R1 represents a hydrogen atom or a methyl group, and R2 represents a hydrocarbon group having 1 to 20 carbon atoms. However, R1 is a hydrogen atom in a case where R2 is a methyl group, and R2 is a hydrocarbon group having 2 or more carbon atoms in a case where R1 is a methyl group.

First claim

What is claimed is:

1. A curable composition comprising:
a pigment;
a resin;
a polymerizable compound;
a photopolymerization initiator; and
a solvent;
wherein the resin includes a resin A which includes a repeating unit having a graft chain of a poly(meth)acrylate structure and a repeating unit having an acid group, and
the graft chain of a poly(meth)acrylate structure includes a repeating unit represented by Formula (1),

in Formula (1), R 1 represents a hydrogen atom, and R 2 represents a linear alkyl group having 1 to 20 carbon atoms.

2. The curable composition according to claim 1 ,
wherein R 2 of Formula (1) is an alkyl group having 2 to 20 carbon atoms.

3. The curable composition according to claim 1 ,
wherein R 2 of Formula (1) is a primary alkyl group having 2 to 20 carbon atoms.

4. The curable composition according to claim 1 ,
wherein the graft chain of a poly(meth)acrylate structure includes a repeating unit represented by Formula (2),

in Formula (2), R 11 represents a methyl group, and R 12 represents a hydrocarbon group having 1 to 20 carbon atoms.

5. The curable composition according to claim 1 ,
wherein a glass transition temperature of the graft chain of a poly(meth)acrylate structure is 100° C. or lower.

6. The curable composition according to claim 1 ,
wherein a Hansen solubility parameter of the graft chain of a poly(meth)acrylate structure is 7.8 to 9.5 (cal/cm 3 ) 0.5 .

7. The curable composition according to claim 1 ,
wherein the resin A is a dispersant.

8. The curable composition according to claim 1 ,
wherein the pigment includes a chromatic pigment.

9. The curable composition according to claim 1 , further comprising:
a pigment derivative.

10. A film formed of the curable composition according to claim 1 , wherein the film is formed by comprising following steps:
a coating step, wherein the curable composition is applied to a silicon wafer using a spin coater;
a pre-bake step, wherein the curable composition formed on the silicon wafer was heated on a first hot plate;
an exposure step, wherein the curable composition, after the pre-bake step, was irradiate with light;
a post-bake step, wherein the curable composition, after the exposure step, was heated on a second hot plate, thereby forming the film.

11. A structural body comprising:
a support;
a partition wall provided on the support; and
a pixel obtained from the curable composition according to claim 1 and provided on an area of the support partitioned by the partition wall.

12. A color filter comprising:
the film according to claim 10 .

13. A solid-state imaging element comprising:
the film according to claim 10 .

14. An image display device comprising:
the film according to claim 10 .

Assignees

• Fujifilm Corp

Inventors

• Mizuno Akio
• TAKISHITA Hirotaka

Classifications

• H10F39/12

  Image sensors · CPC title

• C08F265/06 Primary

  Polymerisation of acrylate or methacrylate esters on to polymers thereof · CPC title

• C08F2/08

  with the aid of dispersing agents for the polymer · CPC title

• C08F2/48

  by ultraviolet or visible light · CPC title

• C08F220/283

  and containing one or more carboxylic moiety in the chain, e.g. acetoacetoxyethyl(meth)acrylate · CPC title