Coloring composition, cured film, color filter, method for manufacturing color filter, solid-state imaging device, image display device, organic electroluminescent element, colorant, and method for producing colorant

Patent metadata

Field	Value
Publication number	US-10317794-B2
Application number	US-201615274360-A
Country	US
Kind code	B2
Filing date	Sep 23, 2016
Priority date	Mar 31, 2014
Publication date	Jun 11, 2019
Grant date	Jun 11, 2019

Abstract

A coloring composition having excellent light fastness, color migration properties, and flatness, a colorant, and a method for producing a colorant are provided. Further, a cured film, a color filter, a method for manufacturing a color filter, a solid-state imaging device, an image display device, and an organic electroluminescent element, each using such the coloring composition, are also provided. The coloring composition contains a colorant represented by General Formula (1) and a curable compound, and has a specific absorbance of 5 or more at a maximum absorption wavelength of 400 nm to 800 nm. R 1 represents an (m+n)-valent linking group, P represents a monovalent substituent having a repeating units derived from a vinyl compound, D represents a colorant structure, and R 2 and L 1 each independently represent a single bond or a divalent linking group.

(D-R 2 ) n —R 1 -(L 1 -P) m   (1)

First claim

What is claimed is:

1. A coloring composition comprising:
a colorant represented by General Formula (1); and
a curable compound,
wherein the colorant has a specific absorbance represented by formula (A λ ) of 5 or more at a maximum absorption wavelength of 400 nm to 800 nm:
(D-R 2 ) n —R 1 -(L 1 -P) m   (1)

wherein
R 1 represents an (m+n)-valent linking group having 1 to 60 carbon atoms, 0 nitrogen atoms, 0 to 40 oxygen atoms, 1 to 120 hydrogen atoms, and 0 to 10 sulfur atoms,
P represents a monovalent substituent having repeating units derived from a vinyl compound,
D represents a colorant structure,
R 2 and L 1 each independently represent a single bond or a divalent linking group,
m represents an integer of 1 to 13,
in the case where m is 1, P represents a monovalent substituent having 2 to 20 repeating units derived from a vinyl compound,
in the case where m is 2 or more, a plurality of P's may be different from each other, and the average value of numbers of the repeating units derived from the vinyl compounds of the plurality of P's is 2 to 20,
n represents an integer of 2 to 14,
in the case where n is 2 or more, a plurality of D's may be different from each other, and
m+n represents an integer of 3 to 15, and
E=A /( c+l ) . . . ( A λ )

wherein
E represents the specific absorbance at a maximum absorption wavelength of 400 nm to 800 nm,
A represents the absorbance at a maximum absorption wavelength of 400 nm to 800 nm,
l represents the cell length in a unit of cm, and
c represents the concentration in a unit of mg/ml of a colorant in the solution.

2. The coloring composition according to claim 1 , wherein D in General Formula (1) is derived from a colorant selected from a triarylmethane colorant, a xanthene colorant, an anthraquinone colorant, a cyanine colorant, a squarylium colorant, a quinophthalone colorant, a phthalocyanine colorant, a subphthalocyanine colorant, an azo colorant, and a dipyrromethene colorant.

3. The coloring composition according to claim 1 , wherein D in General Formula (1) is derived from a colorant selected from a triarylmethane colorant and a xanthene colorant.

4. The coloring composition according to claim 1 , wherein P in General Formula (1) contains repeating units derived from a vinyl compound having an acid group in the amount of 30% by mole or more with respect to all the repeating units of P.

5. The coloring composition according to claim 1 , wherein the colorant contains a group having an ethylenically unsaturated bond.

6. The coloring composition according to claim 1 , wherein the colorant represented by General Formula (1) is a colorant represented by General Formula (2):
(D-R 4 —(S) p ) n —R 3 —(S-L 2 -P) m   (2)

wherein
R 3 represents an (m+n)-valent linking group having 1 to 60 carbon atoms, 0 nitrogen atoms, 0 to 40 oxygen atoms, 1 to 120 hydrogen atoms, and 0 to 10 sulfur atoms,
P represents a monovalent substituent having repeating units derived from a vinyl compound,
D represents a colorant structure,
R 4 and L 2 each independently represent a single bond or a divalent linking group,
S represents a sulfur atom,
m represents an integer of 1 to 13,
in the case where m is 1, P represents a monovalent substituent having 2 to 20 repeating units derived from a vinyl compound,
in the case where m is 2 or more, a plurality of P's may be different from each other, and the average value of numbers of the repeating units derived from the vinyl compounds of the plurality of P's is 2 to 20,
n represents an integer of 2 to 14,
in the case where n is 2 or more, a plurality of D's may be different from each other,
m+n represents an integer of 3 to 15, and
p represents 0 or 1.

7. The coloring composition according to claim 1 , wherein the colorant represented by General Formula (1) is obtained by subjecting a vinyl compound to a radical polymerization reaction in the presence of a compound represented by General Formula (3):
(D-R 4 —(S) p ) n —R 3 —(SH) m   (3)

wherein
R 3 represents an (m+n)-valent linking group having 1 to 60 carbon atoms, 0 nitrogen atoms, 0 to 40 oxygen atoms, 1 to 120 hydrogen atoms, and 0 to 10 sulfur atoms,
D represents a colorant structure,
R 4 represents a single bond or a divalent linking group,
S represents a sulfur atom,
SH represents a thiol group,
m represents an integer of 1 to 13,
n represents an integer of 2 to 14,
in the case where n is 2 or more, a plurality of D's may be different from each other,
m+n represents an integer of 3 to 15, and
p represents 0 or 1.

8. The coloring composition according to claim 1 , wherein D of General Formula (1) has a cation moiety and a counter anion, or has a cation moiety and an anion moiety within one molecule.

9. The coloring composition according to claim 8 , wherein the counter anion is at least one selected from a sulfonic acid anion, a sulfonylimide anion, a bis(alkylsulfonyl)imide anion, a tris(alkylsulfonyl)methide anion, a carboxylic acid anion, a tetraarylborate anion, BF 4 − , PF 6 − , and SbF 6 − .

10. The coloring composition according to claim 1 , wherein the weight-average molecular weight of the colorant represented by General Formula (1) is 2,000 to 12,500.

11. The coloring composition according to claim 1 , further comprising a pigment other than the colorant represented by General Formula (1).

12. The coloring composition according to claim 1 , further comprising a photopolymerization initiator.

13. The coloring composition according to claim 1 , for formation of a colored layer of a color filter.

14. A cured film obtained by curing the coloring composition according to claim 1 .

15. A color filter formed by using the coloring composition according to claim 1 .

16. A solid-state imaging device comprising the color filter according to claim 15 .

17. An image display device comprising the color filter according to claim 15 .

18. An organic electroluminescent element comprising the color filter according to claim 15 .

19. A method for manufacturing a color filter, comprising:
applying the coloring composition according to claim 1 onto a support to form a coloring composition layer;
patternwise exposing the coloring composition layer; and
removing an unexposed area by development to form a colored pattern.

20. A method for manufacturing a color filter, comprising:
applying the coloring composition according to claim 1 onto a support to form a coloring composition layer, followed by curing to form a colored layer;
forming a photoresist layer on the colored layer;
patterning the photoresist layer by carrying out exposure and development to obtain a resist pattern; and
dry-etching the colored layer using the resist pattern as an etching mask to form a colored pattern.

21. The coloring composition according to claim 1 , wherein P in General Formula (1) contains repeating units having an acid group.

22. The coloring composition according to claim 1 , wherein P in General Formula (1) contains repeating units having a polymerizable group.

23. The coloring composition according to claim 1 , wherein P in General Formula (1) represents a monovalent substituent having repeating units derived from a vinyl compound selected from the group consisting of (meth)acrylic acid esters, crotonic acid esters, vinyl esters, maleic acid diesters, fumaric acid diesters, itaconic acid diesters, (meth)acrylamides, styrenes, vinyl ethers, vinyl ketone

Assignees

• Fujifilm Corp

Inventors

• Idei Hiroaki
• Oota Kazuya
• SAMEJIMA Suguru
• Harada Masayuki
• Hara Akihiro
• Ito Junichi

Classifications

• C09B5/14

  Benz-azabenzanthrones (anthrapyridones) · CPC title

• C09B49/126

  from triarylmethane compounds · CPC title

• G03F7/031

  Organic compounds not covered by group G03F7/029 · CPC title

• C09B25/00

  Quinophthalones · CPC title

• C08F222/102

  of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate · CPC title