Patent ID: 8728705

Claim:
A negative photosensitive material comprising: (A) a polyimide precursor obtained by reacting a tetracarboxylic acid component and two types of diamine components consisting of an aromatic diamine and a fluorinated and methylated benzidine, such that the fluorinated and methylated benzidine diamine component is present in a proportion of 10 to 29 mol% based on the two diamine components, the polyimide precursor having a structural unit represented by the following general formula (1) and a structural unit represented by the following general formula (2), the structural unit represented by the general formula (2) being present in the polyimide precursor in a proportion of 10 to 29 mol% based on an overall amount of the polyimide precursor; and (B) at least one of a pyridine derivative represented by the following general formula (3) and a pyridine derivative represented by the following general formula (4): wherein R 1 , R 2 , R 3 , R 4 and R 5 , which may be the same or different, are each a C 1 to C 4 alkyl group, and Ar is an aryl group having a nitro group at its ortho position, wherein R 1 , R 2 , R 4 and R 5 , which may be the same or different, are each a C 1 to C 4 alkyl group, and Ar is an aryl group having a nitro group at its ortho position.