Patent ID: 7740996

Claim:
A photosensitive resin composition comprising an alkali-soluble resin component (A) and a photosensitizer (B), said component (A) comprising a resin component (A1) having a structural unit (a1) represented by general formula (a1) shown below: wherein R 0 represents a hydrogen atom or a methyl group; R 1 represents a single bond or an alkylene group of 1 to 5 carbon atoms; R 2 represents an alkyl group of 1 to 5 carbon atoms; and a represents an integer of 1 to 5, and b represents 0 or an integer of 1 to 4, with the proviso that the sum of a and b is 5 or less, and when two or more R 2 are present, R 2 may be the same or different, wherein the amount of the structural unit (a1) based on the combined total of all structural units constituting the resin component (A1) is 100 mol %, and the content of the component (A1) within the component (A) is 100 mol %, wherein said photosensitizer (B) is a guinonediazide group-containing compound.