Patent ID: 7816072
Filing Date: 2010-10-19
Classification: G03F,Y10S

Abstract:
1. A method for forming a resist pattern, comprising: forming a resist film on a substrate using a positive resist composition; selectively forming a fine resist pattern in said resist film by exposing said resist film to an electron beam; selectively forming a rough resist pattern having dimensions greater than the dimensions of the fine resist pattern by exposing said resist film to and at least one other exposure light source selected from the group consisting of g-line radiation, i-line radiation, and a KrF excimer wherein the fine and rough resist patterns are formed in either order so as to perform a mix and match method; and subjecting said resist film to alkali developing to form a resist pattern, wherein the positive resist composition comprises a resin component (A)′ that contains acid-dissociable, dissolution-inhibiting groups and increases alkali solubility under action of acid, and an acid generator component (B)′ that generates acid upon irradiation with both said electron beam and said at least one other exposure light source.