Curable coloring composition, color filter, solid-state imaging device, image display device, and method for producing cured film

Patent metadata

Field	Value
Publication number	US-11112693-B2
Application number	US-201816058441-A
Country	US
Kind code	B2
Filing date	Aug 8, 2018
Priority date	Feb 15, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Provided are a curable coloring composition which is suitable for the production of a cured film in cyan color, having good moisture resistance, a color filter, an image sensor, and a method for producing a cured film. The curable coloring composition includes a coloring agent including a phthalocyanine pigment having Al as a central metal, a basic pigment derivative, and a curable compound, in which the coloring agent includes 80% by mass or more of the phthalocyanine pigments, and the content of the phthalocyanine pigment having Al as a central metal among the phthalocyanine pigments is 30% by mass or more.

First claim

What is claimed is:

1. A curable coloring composition comprising:
a coloring agent including a phthalocyanine pigment having Al as a central metal;
a basic pigment derivative; and
a curable compound,
wherein the coloring agent includes 80% by mass or more of the phthalocyanine pigments, the content of the phthalocyanine pigment having Al as a central metal among phthalocyanine pigments is 30% by mass or more, and the phthalocyanine pigment having Al as a central metal has a ligand including a phosphorus atom.

2. The curable coloring composition according to claim 1 ,
wherein the content of the phthalocyanine pigment having Al as a central metal among the phthalocyanine pigments is 50% by mass or more.

3. The curable coloring composition according to claim 1 ,
wherein the ligand including a phosphorus atom has a hydrophobic group.

4. The curable coloring composition according to claim 1 ,
wherein the phthalocyanine pigment having Al as a central metal is represented by Formula (Pc-1),

in the formula, L represents a ligand having one or more coordination sites for the Al atom, and n represents the number of coordination sites contained in L.

5. The curable coloring composition according to claim 1 ,
wherein the coloring agent has a content of a yellow coloring agent of 5% by mass or less.

6. The curable coloring composition according to claim 1 ,
wherein the basic pigment derivative has at least one selected from an azo-based skeleton and a benzoimidazolone-based skeleton.

7. The curable coloring composition according to claim 1 ,
wherein the curable compound includes an epoxy compound, and
the curable coloring composition further includes a curing aid.

8. The curable coloring composition according to claim 1 ,
wherein the curable compound includes a radically polymerizable compound, and
the curable coloring composition further includes a photopolymerization initiator A having a light absorption coefficient at 365 nm of 1.0×10 3 mL/gcm or more in methanol, and a photopolymerization initiator B having a light absorption coefficient at 365 nm of 1.0×10 2 mL/gcm or less and a light absorption coefficient at 254 nm of 1.0×10 3 mL/gcm or more in methanol.

9. The curable coloring composition according to claim 1 , used for forming pixels in cyan color.

10. A color filter using the curable coloring composition according to claim 1 .

11. A solid-state imaging device comprising the color filter according to claim 10 .

12. The solid-state imaging device according to claim 11 , further comprising an organic photoelectric conversion film.

13. An image display device comprising the color filter according to claim 10 .

14. A method for producing a cured film, comprising:
forming a curable coloring composition layer on a substrate, using the curable coloring composition according to claim 1 ;
patternwise exposing the curable coloring composition layer; and
removing an unexposed area by development to form a pattern,
wherein the method for producing a cured film is carried out at a temperature of 180° C. or lower through all the steps.

15. The method for producing a cured film according to claim 14 , further comprising performing exposure after formation of the pattern.

16. The method for producing a cured film according to claim 15 ,
wherein a curable coloring composition including a radically polymerizable compound, a photopolymerization initiator A having a light absorption coefficient at 365 nm of 1.0×10 3 mL/gcm or more in methanol, and a photopolymerization initiator B having a light absorption coefficient at 365 nm in methanol of 1.0×10 2 mL/gcm or less and a light absorption coefficient at 254 nm of 1.0×10 3 mL/gcm or more in methanol is used as the curable coloring composition, and
the exposure before formation of the pattern is performed with light at a wavelength of more than 350 nm and 380 nm or less, and
the exposure after formation of the pattern is performed with light at a wavelength of 254 to 350 nm.

17. The method for producing a cured film according to claim 14 ,
wherein the substrate is a substrate having an organic photoelectric conversion film.

18. The curable coloring composition according to claim 1 , wherein the coloring agent includes, in addition to the aluminum-containing phthalocyanine pigment, at least one other phthalocyanine pigment.

19. The curable coloring composition according to claim 1 , wherein the coloring composition includes an acidic resin and/or an amphoteric resin.

20. The curable coloring composition according to claim 1 , wherein the coloring agent includes 90% by mass or more of phthalocyanine pigments.

21. The curable coloring composition according to claim 1 , wherein the content of yellow coloring agent in the coloring agent is 1% by mass or less.

22. A pixel in cyan color formed from the coloring composition according to claim 1 .

23. A curable coloring composition comprising:
a coloring agent including a phthalocyanine pigment having Al as a central metal;
a basic pigment derivative; and
a curable compound,
wherein the coloring agent includes 80% by mass or more of phthalocyanine pigments, the content of the phthalocyanine pigment having Al as a central metal among phthalocyanine pigments is 30% by mass or more, and the phthalocyanine pigment having Al as a central metal is a compound represented by Formula (Pc):

wherein in Formula (Pc), R 1 to R 16 each independently represents a hydrogen atom or a substituent, L represents a ligand having one or more coordination sites for the Al atom and having a hydrophobic group, and n represents the number of coordination sites contained in L.

24. The curable coloring composition according to claim 23 , wherein the coloring agent includes, in addition to the aluminum-containing phthalocyanine pigment, at least one other phthalocyanine pigment.

Assignees

• Fujifilm Corp

Inventors

• Taguchi Yoshinori
• Muro Naotsugu
• Murakami Yousuke
• Bak Seongmu
• Yoshii Akiko

Classifications

• C08K5/0091

  Complexes with metal-heteroatom-bonds · CPC title

• G03F7/027

  Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (G03F7/075 takes precedence) · CPC title

• C08G59/3218

  Carbocyclic compounds · CPC title

• G03F7/105 Primary

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

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title