Photosensitive colored resin composition, color filter and manufacturing method thereof, and liquid crystal display device

Abstract

This invention provides a high-precision photosensitive coloring resin composition with excellent time-dependent filtration stability, a color filter using the photosensitive coloring resin composition, a method for manufacturing the same, and a liquid crystal display device. The photosensitive coloring resin composition includes: a colorant (A), an alkali-soluble resin (B), a photopolymerizable compound (C), a photoinitiator (D), and a solvent (E). The colorant (A) includes a colorant (A-1) having the structure shown in formula (a1-1). In formula (a1-1), A1 to A16 each independently represent a hydrogen atom, a halogen atom, or the structure shown in formula (a1-2). When n1, n2, n3, and n4 represent the number of structures shown in formula (a1-2) in the four isoindoline rings, the colorant (A-1) satisfies the following conditions A and B: Condition A: 5n1 + n2 + n3 + n411 Condition B: n1, n2, n3, and n4 are not all the same. *-X-A17 Equation (a1-2)

Claims

1. A photosensitive coloring resin composition, comprising: Colorant (A); alkali-soluble resin (B); photopolymerizable compound (C); photoinitiator (D); and solvent (E), wherein the colorant (A) comprises a colorant (A-1) having the structure shown in formula (a1-1), in which A1 to A16 each independently represent a halogen atom or the structure shown in formula (a1-2), in which X represents a divalent linker, A17 represents a substituted or unsubstituted phenyl group, and * represents a bond position. Furthermore, when n1 represents the number of structures shown in formula (a1-2) in A1 to A4, n2 represents the number of structures shown in formula (a1-2) in A5 to A8, n3 represents the number of structures shown in formula (a1-2) in A9 to A12, and n4 represents the number of structures shown in formula (a1-2) in A13 to A16, the colorant (A-1) satisfies the following conditions A and B: Condition A: 5 ≤ n1 + n2 + n3 + n4 ≤ 11 Condition B: n1, n2, n3, and n4 are not all the same.

2. The photosensitive coloring resin composition as claimed in claim 1, wherein the colorant (A-1) satisfies the following condition A': Condition A': 7≤n1+n2+n3+n4≤9.

3. The photosensitive coloring resin composition as claimed in claim 1, wherein the halogen atom in formula (a1-1) is a fluorine atom.

4. The photosensitive coloring resin composition as claimed in claim 1, wherein in the formula (a1-2), A17 represents 4-alkoxycarbonylphenyl.

5. The photosensitive coloring resin composition as claimed in claim 1, wherein the colorant (A) comprises a colorant (A-2) having the structure shown in formula (a2-1), in formula (a2-1) where A21 to A28 each independently represent a hydrogen atom or a halogen atom, and A31 to A38 each independently represent the structure shown in formula (a2-2), in formula (a2-2) where X' represents a divalent linker group, A39 represents a substituted or unsubstituted phenyl group, and * represents a bond position.

6. The photosensitive coloring resin composition as claimed in claim 1, wherein, based on the total weight of the solid components of the photosensitive coloring resin composition as 100% by weight, the content of the colorant (A) is from 0.5% by weight to 80% by weight, the content of the colorant (A-1) is from 0.5% by weight to 80% by weight, the content of the alkali-soluble resin (B) is from 5% by weight to 60% by weight, the content of the photopolymerizable compound (C) is from 5% by weight to 60% by weight, and the content of the photoinitiator (D) is from 0.1% by weight to 12% by weight.

7. The photosensitive coloring resin composition as claimed in claim 5, wherein the content of the colorant (A-2) is from 0.5% to 75% by weight, based on the total weight of the solid components of the photosensitive coloring resin composition as 100% by weight.

8. A method for manufacturing a color filter, comprising: A pixel layer is formed using a photosensitive coloring resin composition as described in any one of claims 1 to 7.

9. A color filter made by the method of manufacturing a color filter as described in claim 8.

10. A liquid crystal display device comprising a color filter as described in claim 9.