Radiation-sensitive colored compositions, cured colored films, color filters, processes for forming colored patterns, processes for preparing color filters, solid-state image sensors and liquid crystal display devices

Patent metadata

Field	Value
Publication number	US-10216083-B2
Application number	US-201514853306-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Mar 15, 2013
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

Herein provided are radiation-sensitive colored compositions suppressing a phenomenon in which a radiation-sensitive colored composition of another color penetrates into previously formed pixels to result in a decrease in the color purity of the previously obtained pixels; cured colored films and color filters using them; processes for forming colored patterns; processes for preparing the color filters; solid-state image sensors; and image display devices.
The radiation-sensitive colored compositions comprise a dyestuff, a photopolymerizable compound, a photoinitiator, and a nonionic surfactant containing a partial structure represented by formula (1) or (2) below and having a weight average molecular weight of 2500 or less and an HLB value of 9.2 to 15.5 as determined by Griffin's method. In formula (1) and (2), R 1 and R 2 each independently represent a hydrocarbon group containing 8 or more carbon atoms, and n1 and n2 each independently represent 4 to 25.

First claim

What is claimed is:

1. A radiation-sensitive colored composition comprising: a dyestuff, a photopolymerizable compound, a photoinitiator, and a nonionic surfactant containing a partial structure represented by formula (1) or (2) and having a weight average molecular weight of 2500 or less and an HLB value of 9.2 to 15.5 as determined by Griffin's method;

wherein R 1 and R 2 each independently represent a hydrocarbon group containing 8 or more carbon atoms, and n1 and n2 each independently represent 4 to 25,
wherein an amount of the dyestuff contained in the radiation-sensitive colored composition is 10 to 70% by mass based on the total solids of the radiation-sensitive colored composition.

2. The radiation-sensitive colored composition according to claim 1 , wherein the nonionic surfactant is a compound represented by formula (3) below:

wherein R 3 represents an alkyl or alkenyl group containing 8 or more carbon atoms, and n3 represents 4 to 25.

3. The radiation-sensitive colored composition according to claim 1 , wherein the nonionic surfactant is a compound represented by formula (4) below:

wherein R 4 represents an alkyl or alkenyl group containing 15 to 19 carbon atoms, and n4 represents 4 to 25.

4. The radiation-sensitive colored composition according to claim 3 , wherein the dyestuff has a weight average molecular weight of 5000 or more.

5. The radiation-sensitive colored composition according to claim 3 , which comprises a colorant including the dyestuff in a concentration of 50% by mass or more, relative to the total solids of the radiation-sensitive colored composition.

6. The radiation-sensitive colored composition according to claim 3 , wherein the dye contains a partial structure derived from a dye selected from dipyrromethene dyes, azo dyes, anthraquinone dyes, triphenylmethane dyes, xanthene dyes, cyanine dyes, squarylium dyes, quinophthalone dyes, phthalocyanine dyes and subphthalocyanine dyes.

7. The radiation-sensitive colored composition according to claim 3 , further comprising a pigment.

8. The radiation-sensitive colored composition according to claim 1 , wherein the dyestuff has a weight average molecular weight of 5000 or more.

9. The radiation-sensitive colored composition according to claim 1 , which comprises a colorant including the dyestuff in a concentration of 50% by mass or more, relative to the total solids of the radiation-sensitive colored composition.

10. The radiation-sensitive colored composition according to claim 1 , wherein the dye contains a partial structure derived from a dye selected from dipyrromethene dyes, azo dyes, anthraquinone dyes, triphenylmethane dyes, xanthene dyes, cyanine dyes, squarylium dyes, quinophthalone dyes, phthalocyanine dyes and subphthalocyanine dyes.

11. The radiation-sensitive colored composition according to claim 1 , further comprising a pigment.

12. The radiation-sensitive colored composition according to claim 1 , further comprising an alkali-soluble resin.

13. The radiation-sensitive colored composition according to claim 1 , suitable for forming a colored layer of a color filter.

14. The radiation-sensitive colored composition according to claim 1 , wherein the photoinitiator is an oxime compound.

15. A cured colored film obtainable by curing the radiation-sensitive colored composition according to claim 1 .

16. A color filter comprising the cured colored film according to claim 15 .

17. The color filter according to claim 16 , wherein the cured colored film has a thickness of 0.2 to 1.5 μm.

18. A solid-state image sensor comprising the color filter according to claim 16 .

19. An image display device comprising the color filter according to claim 16 .

20. A method for forming a colored pattern, comprising applying the radiation-sensitive colored composition according to claim 1 on a support to form a radiation-sensitive colored composition layer; exposing the radiation-sensitive colored composition layer in a pattern; and developing unexposed regions to remove unexposed area, thereby forming a colored pattern.

21. A method for manufacturing a color filter, comprising applying the radiation-sensitive colored composition according to claim 1 on a support to form a radiation-sensitive colored composition layer; exposing the radiation-sensitive colored composition layer in a pattern; and developing unexposed regions to remove unexposed area, thereby forming a colored pattern.

22. The radiation-sensitive colored composition according to claim 1 , wherein the amount of the dyestuff contained in the radiation-sensitive colored composition is 10 to 50% by mass based on the total solids of the radiation-sensitive colored composition.

23. The radiation-sensitive colored composition according to claim 1 , the amount of the dyestuff contained in the radiation-sensitive colored composition is 15 to 30% by mass based on the total solids of the radiation-sensitive colored composition.

Assignees

• Fujifilm Corp

Inventors

• Idei Hiroaki
• Oota Kazuya
• Harada Masayuki
• Gotou Akiyoshi

Classifications

• G03F7/0007 Primary

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

• G03F7/027

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

• G03F7/32

  Liquid compositions therefor, e.g. developers · CPC title

• G03F7/105

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

• G03F7/16

  Coating processes; Apparatus therefor (applying coatings to base materials in general B05; applying photosensitive compositions to base for photographic purposes G03C1/74) · CPC title