Patent ID: 9454078
Filing Date: 2016-09-27
CPC Classification: C08G,C09D,G03F

Claim Text:
1. A positive-type photosensitive resin composition comprising: (a) a polyimide resin including a structural unit represented by the general formula (1) and a structural unit represented by the general formula (2), and (b) a quinonediazide compound, wherein the polyimide resin (a) including a structural unit represented by the general formula (1) and a structural unit represented by the general formula (2) has an imidization ratio of 85% or more, and also a ratio of the structural unit represented by the general formula (1) to the structural unit represented by the general formula (2) is within a range of 30:70 to 90:10: wherein X 1 in the general formula (1) represents a tetracarboxylic acid residue including 1 to 4 aromatic rings, and Y 1 represents an aromatic diamine residue including 1 to 4 aromatic rings; and wherein X 2 in the general formula (2) represents a tetracarboxylic acid residue including 1 to 4 aromatic rings, and Y 2 represents a diamine residue including at least two or more alkylene glycol units in the main chain; wherein the diamine residue including at least two or more alkylene glycol units in the main chain represented by Y wherein R 1 and R 2 in the general formula (3) represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, a plurality of R 1 (s) in the same residue may be the same or different, and n represents an integer of 2 to 50.