Patent ID: 8334092

Claim:
A photo-sensitive resin composition, comprising: an acid-modified oligomer, a photo-polymerizable monomer, a photo-initiator, an epoxy resin and a butadiene-modified epoxy resin having at least three epoxy groups and at least three double bonds in the main chain, wherein the butadiene-modified epoxy resin is the compound represented by Chemical Formula 1 and has an acid value of 1 mgKOH/g or less, and a number average molecular weight of 1,000 to 10,000: wherein, R 1 and R 2 are respectively a C 1-5 alkyl group, a C 1-5 alkoxy group, cyclopentyl group, cyclohexyl group, a C 6-30 aryl group, a C 6-30 alkylaryl group or a halogen atom; a, b, c, d, e and f are respectively an integer of 1 to 5, and a+b+c+d+e+f is 20 or less; and n is an integer of 1 to 50.