Patent ID: 8445183

Claim:
A method of manufacturing a semiconductor device, comprising: a first resist film formation process of forming a first resist film on a processing target surface using a positive-type photoresist material; a first resist pattern formation process of forming a first resist pattern by performing development after exposure in which exposure light is irradiated onto the first resist film; a second resist film formation process of forming a second resist film on the processing target surface, where the first resist pattern is formed, using a photoresist material; and a second resist pattern formation process of forming a second resist pattern by performing exposure in which exposure light is irradiated onto the second resist film and then performing development, wherein, the method further includes, before the second resist film formation process, an insolubilization process for insolubilizing the first resist pattern against a developer used in development of the second resist film formation process and a solvent of a photoresist material used in the second resist pattern formation process, and in the insolubilization process, insolubilization of the first resist pattern is performed by sequentially performing a re-exposure step of performing re-exposure in which light having the same wavelength as that of exposure light irradiated in the exposure of the first resist pattern formation process is irradiated onto the first resist pattern and a heat treatment step of performing heat treatment to heat the first resist pattern subjected to the re-exposure process.