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

Abstract

A photosensitive coloring resin composition comprises a colorant (A), an alkali-soluble resin (B), a photopolymerizable compound (C), a photoinitiator (D), and a solvent (E). The nickel content in the photosensitive coloring resin composition ranges from 1 ppm to 100 ppm, and the colorant (A) includes a triphenylmethane-based colorant (A-1). The present invention also provides a method for manufacturing a color filter comprising forming a pixel layer using the above-described photosensitive coloring resin composition, a color filter obtained by the above-described manufacturing method, and a liquid crystal display comprising the above-described color filter. By using a colorant (A) including a triphenylmethane-based colorant (A-1) and controlling the nickel content to 1 ppm to 100 ppm, the present invention can reduce the size of foreign matter after multi-stage thermal processing in the pixel layer formed by the photosensitive coloring resin composition.

Claims

1. A photosensitive coloring resin composition, comprising: a colorant (A); an alkali-soluble resin (B); a photopolymerizable compound (C); a photoinitiator (D); and a solvent (E); wherein, The photosensitive coloring resin composition contains nickel in the range of 1 ppm to 100 ppm and calcium in the range of 1 ppm to 100 ppm, and the colorant (A) includes a triphenylmethane-based colorant (A-1).

2. The photosensitive coloring resin composition as claimed in claim 1, wherein, The nickel content in this photosensitive coloring resin composition ranges from 2 ppm to 80 ppm.

3. The photosensitive coloring resin composition as claimed in claim 1, wherein, The nickel content in this photosensitive coloring resin composition ranges from 3 ppm to 50 ppm.

4. The photosensitive coloring resin composition as claimed in claim 1, wherein, The calcium content in this photosensitive coloring resin composition ranges from 5 ppm to 50 ppm.

5. The photosensitive coloring resin composition as claimed in claim 1, wherein, The triphenylmethane-based colorant (A-1) comprises a triphenylmethane-based colorant having a structure as shown in formula (I-1-1), where A represents a p-valent organic group, wherein the carbon atom in the organic group directly bonded to N does not have a π bond, and the organic group represents an aliphatic hydrocarbon group having a saturated aliphatic hydrocarbon group at least at the end directly bonded to N, or an aromatic group having the aliphatic hydrocarbon group, wherein the carbon chain of the aliphatic hydrocarbon group may contain at least one of an oxygen atom, a sulfur atom, and a nitrogen atom, and the carbon chain of the aromatic group may contain at least one of an oxygen atom, a sulfur atom, and a nitrogen atom. R1, R2, R3, R4, and R5 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group. R2 and R3 can bond to each other to form a ring structure, and R4 and R5 can bond to each other to form a ring structure. Multiple R1, R2, R3, R4, and R5 can be the same or different. Ar1 represents a substituted or unsubstituted divalent aromatic group. Multiple Ar1 can be the same or different. Bq- represents an anion. p represents an integer of 1 or more. r and s each independently represent an integer of 1 or more.

6. The photosensitive coloring resin composition as claimed in claim 5, wherein, The Bq- is a heterogeneous multiple acid anion containing at least one of molybdenum and tungsten.

7. A method for manufacturing a color filter, comprising: forming a pixel layer using a photosensitive coloring resin composition as described in any one of claims 1 to 6.

8. A color filter, which is manufactured by the method for manufacturing a color filter as described in claim 7.

9. A liquid crystal display comprising: a color filter as described in claim 8.