Patent ID: 8199269

Claim:
A method for manufacturing a semiconductor device including a step of forming a polymer film (a) above a support substrate, a step of forming a semiconductor element above the polymer film (a) that includes forming a gate electrode, forming a channel layer as a semiconductor layer, forming a gate insulating layer, and forming a source electrode and a drain electrode above the polymer film (a) that is formed above the support substrate, and a step of separating the support substrate from the polymer film (a) formed with the semiconductor element in which the polymer film (a) has a thickness of 1 μm or more and 30 μm or less, a transmittance of 80% of higher to a visible light at a wavelength of 400 nm or more and 800 nm or less, a 3 wt % loss temperature of 300° C. or higher and a melting point of 280° C. or higher, wherein the polymer film (a) includes at least one polymer material selected from a polyamidoimide having an alicyclic structure, a polyimide having an alicyclic structure, a polyamide having an alicyclic structure, poly(p-xylylene), and polybenzoxazole as represented by formula (1), wherein n is an integer from 5 to 10,000, each Y 1 is independently selected from a bivalent aromatic group and a bivalent alicyclic group, and X 1 is represented by formula (2), wherein each Z 1 is a direct bond or an organic group independently selected from a linear alkylene group of 1 to 6 carbon atoms, a branched alkylene group of 1 to 6 carbon atoms, SO 2 , S, O, CO, NHCO, and C(CB 3 ) 2 , and wherein B is a halogen selected from fluorine, chlorine, bromine and iodine.