| abstract |
(57) [Summary] (Correction) [Structure] (A) Polyamic acid ester having a weight average molecular weight of 3000 to 300,000, which is obtained by gel permeation chromatography and represented by polystyrene by gel permeation chromatography, and (B) absorption. A photosensitive resin composition containing a sensitizer having a maximum wavelength (λmax) of 330 to 500 nm as an essential component. [Chemical 1] [Effect] It is possible to obtain a photosensitive polyimide resin that retains excellent photosensitivity and is lightly colored after curing, and does not cause trouble in the assembly process even when used in a semiconductor device. it can. |