Printed wiring board and semiconductor device and processes to prepare the same

摘要

A printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device prepared by coating a substrate with a photosensitive resin composition comprising an oxygen sensitizer and a cis-diene-substituted polyamic acid or polyimide and forming fine patterns by exposure to radiation. Processes for producing a printed wiring board, a substrate for disposing semiconductor chips and a semiconductor device, which comprises coating a substrate with the photosensitive resin composition and forming fine patterns by crosslinking cis-diene by oxidation polycondensation with singlet oxygen generated by exposure of the oxygen sensitizer to radiation. The photosensitive resin composition is of the negative type and exhibits high sensitivity and high resolution. The photosensitive resin composition forms a resin layer having excellent heat resistance.