Patent ID: 7611818

Claim:
A photosensitive resin composition comprising: (A) a binder polymer; (B) a photopolymerizing compound with an ethylenic unsaturated bond; (C) a photopolymerization initiator; and (D) a compound represented by the following general formula (1a), (1b), (1c), or (2), wherein in formula (1a), X 1 represents a CH group, a CCH 3 group, a CC 2 H 5 group, or nitrogen, X 2 represents a CH group, a CCH 3 group, or a CC 2 H 5 group, and Y 1 and Y 2 represent mutually different optionally substituted aryl; in formula (1b), X 1 and X 2 both represent nitrogen, and Y 1 and Y 2 represent mutually different optionally substituted aryl; in formula (1c), X 1 and X 2 both represent nitrogen and Y 1 and Y 2 both represent mutually the same group represented by formula (3) or formula (4) wherein in formulae (3) and (4), at least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 represents C1-20 alkyl and the other represent hydrogen; and in formula (2), X 3 , X 4 , X 5 and X 6 each independently represent a CH group, a CCH 3 group, a CC 2 H 5 group or nitrogen, Y 3 and Y 4 each independently represent optionally substituted aryl, and Y 5 represents optionally substituted arylene, wherein the acid value of component (A) is 45-200 mg KOH/g, and wherein component (A) contains polymerizable monomer with a carboxyl group, (meth)acrylic acid alkyl esters, and styrene or a styrene derivative as a copolymerizing component, component (B) contains a bisphenol A-type (meth)acrylate compound, and component (C) contains a 2,4,5-triarylimidazole dimer, and wherein component (A) contains 0.1 to 30 wt % of the styrene or styrene derivative as a copolymerizing component, with respect to the total amount of component (A), and the photosensitive resin composition is developable in an aqueous alkali solution having a pH in the range of 9 to 11.