Photosensitive resin composition, color filter and liquid crystal display device

A black matrix formed by a photosensitive resin, wherein the photosensitive resin composition comprises:

• an alkaline-soluble resin (A), wherein the alkaline-soluble resin (A) comprises a resin having unsaturated group(s) (A-1), the resin having unsaturated groups (A-1) is synthesized by subjecting a mixture to a polymerization, and the mixture comprises an epoxy compound having at least two epoxy groups (i) and a compound having at least a carboxyl group and at least a vinyl unsaturated group (ii);
• a compound containing vinyl unsaturated group(s) (B);
• a photo initiator (C);
• quinonediazide sulfonic acid ester (D) synthesized by an ortho-naphthoquinone diazide sulfonic acid and a hydroxyl compound or a salt of the ortho-naphthoquinone diazide sulfonic acid and the hydroxyl compound, wherein the hydroxyl compound includes a hydroxyl aryl compound having a structure of Formula (III):
• wherein R21 to R23 are the same or different from each other, each of which independently represents a hydrogen atom or a C1 to C6 alkyl group;
• R24-R29 are the same or different from each other, each of which independently represents hydrogen atom, a halogen atom, a C1 to C6 alkyl group, a C1 to C6 alkoxy group, a C1 to C6 alkenyl group and a cycloalkyl group;
• R30 and R31 are the same or different from each other, each of which independently represents a hydrogen atom, a halogen atom and a C1 to C6 alkyl group;
• x, y and z each independently represents an integer of 1 to 3;
• and k is 0 or 1;
• a solvent (E), and
• a black pigment (F),
• wherein the photo initiator (C) includes an O-acyloxime compound (C-1).