Patent ID: 6566040
Filing Date: 2003-05-20
Classification: G03F,H01L

Abstract:
A method of manufacturing a semiconductor device comprising the steps of:forming, on a semiconductor base member, a first resist pattern of a first resist that is capable of generating acid; forming a film of a second resist on said first resist pattern, said second resist being such that a crosslinking reaction occurs therein under presence of acid; forming a crosslinked film in a portion of said film of the second resist that is in contact with said first resist pattern by causing said first resist pattern to supply acid to said film of the second resist; forming a second resist pattern in which said first resist pattern is covered with said crosslinked film by removing an uncrosslinked portion of said film of the second resist; performing a heat treatment to cause thermal reflow of said crosslinked film, to thereby reduce a gap in said second resist pattern; and etching said semiconductor base member by using, as a mask, said second resist pattern having the reflow-subjected crosslinked film.