Patent ID: 8513350

Claim:
A positive type photosensitive resin composition, comprising a copolymer (A) and a 1,2-quinonediazido compound (B), wherein the copolymer (A) is obtained by polymerizing free radical polymerizable monomers (a1) of general formula (I) with other free radical polymerizable monomers (a2): wherein R 1 is hydrogen or an alkyl group having 1-5 carbon atoms in which any hydrogen may be replaced by fluorine, and R 2 , R 3 , and R 4 are independently hydroxyl group, an alkyl group having 1-5 carbon atoms, an alkoxyl group having 1-5 carbon atoms or —O(Si(C l H 2l+1 ) 2 O) m Si(C p H 2p+1 ) 3 , wherein 1 is an integer of 1-5, m is 0 or an integer of 1-10, n is an integer of 1-5, and p is an integer of 1-5; and wherein the other free radical polymerizable monomers (a2) are selected from free radical polymerizable monomers having phenolic OH of a general formula (II): wherein in the general formula (II), R 5 , R 6 , and R 7 are independently hydrogen or an alkyl group having 1-3 carbon atoms in which any hydrogen may be replaced by fluorine, R 8 , R 9 , R 10 , R 11 , and R 12 are independently hydrogen, halogen, —CN, —CF 3 , —OCF 3 , —OH, an alkyl group having 1-5 carbon atoms in which any —CH 2 — may be replaced by —COO—, —OCO—, —CO— or any hydrogen may be replaced by halogen, or an alkoxyl group having 1-5 carbon atoms in which any hydrogen may be replaced by halogen, wherein at least one of R 8 , R 9 , R 10 , R 11 , and R 12 is —OH.