Patent ID: 6927274

Claim:
A resin composition containing an imidized polyimide precursor having a polymer structure unit represented by formula (1) below: wherein the chemical structure represented by A 1 includes an aromatic compound and the chemical structure represented by A 2 includes an alicyclic compound, and a photosensitizer, wherein the chemical structure represented by A 1 in formula (1) above is biphenyl represented by chemical formula (2) below: and the chemical structure represented by A 2 in formula (1) above is an alicyclic compound selected from either one of cyclohexane represented by chemical formula (3) below: or 4,4′-methylenebiscyclohexane represented by chemical formula (4) below: and wherein the polyimide precursor has an imidization degree of 7.5% or more and 36% or less as determined by equation (a) below: ( PS 1 /PS 2 )/( PI 1 /PI 2 )×100 Equation (a): wherein PS 1 and PI 1 represent the absorbances derived from the imide ring and PS 2 and PI 2 represent the absorbances derived from chemical structure A 2 in formula (1) above, and PS 1 and PS 2 represent the absorbances of the polyimide precursor to be tested for the imidization degree and PI 1 , and PI 2 represent the absorbances of the polyimide precursor after complete imidization.