Patent ID: 7927781

Claim:
A photosensitive resin composition comprising a) 100 parts by weight of an alkali-soluble acrylate resin, b) 40 to 100 parts by weight of a cross-linking monomer having at least two ethylenic double bonds, c) 1.5 to 7 parts by weight of the mixture of a phosphine oxide based photopolymerization initiator and an acridon based photopolymerization initiator, wherein the alkali-soluble acrylate resin is prepared by polymerizing a mixture of 20 to 50 weight % of an unsaturated carboxylic acid monomer, 15 to 45 weight % of an aromatic monomer, 1 to 15 weight % of a phosphate ester-containing monomer, and 10 to 50 weight % of an aliphatic acrylic monomer, wherein the phosphine oxide based photopolymerization initiator is at least one compound selected from the group consisting of the compounds represented by the following formula 1: wherein, R 1 is a phenyl, alkyl, or trialkylbenzoyl group, R 2 is independently a C1 to C6 alkyl group, and n is an integer of 0 to 3, wherein the acridon based photopolymerization initiator is at least one compound selected from the group consisting of 10-methylacridone, 10-butyl-2-chloroacridone, 10-butyl-2-isopropylacridone, and the compounds represented by the following formula 2: wherein, R 3 is a C1 to C6 alkyl, R 4 is a C1 to C2 alkyl or a halogen, and R 5 is a C1 to C2 alkyl or a halogen.