Patent ID: 8043795

Claim:
A method of forming a resist pattern, comprising: applying a positive resist composition on a support to form a first resist film; conducting selective exposure of the first resist film through a first mask pattern, and developing the first resist film to form a first resist pattern; applying a negative resist composition which comprises an organic solvent (S″) containing an alcohol-based organic solvent on the support that the first resist pattern is formed, thereby forming a second resist film; and conducting selective exposure of the second resist film through a second mask pattern, and developing the second resist film to form a resist pattern denser than the first resist pattern, wherein the positive resist composition comprises a resin component (A-12) comprising a structural unit (a5) derived from an (α-lower alkyl)acrylate ester having an acid dissociable, dissolution inhibiting group, structural unit (a6) derived from an (α-lower alkyl)acrylate ester that contains a lactone-containing group and a structural unit (a7) derived from an acrylate ester that contains a polar group-containing polycyclic group, and at least one organic solvent (S) selected from the group consisting of lactones, ketones, propylene glycol monomethyl ether acetate (PGMEA), ethyl lactate (EL) and propylene glycol monomethyl ether (PGME).