Patent ID: 7105265

Claim:
A method for removing a resist pattern, which comprises a resist pattern forming step of forming a resist pattern on a substrate using a chemically amplified positive resist composition and a removing step of removing the resist pattern from the substrate using a solvent, a composition prepared by dissolving (A) an alkali soluble resin having a hydroxyl group in the side chain, (B) a photo acid generator and (C) a compound represented by the following general formula (I): H 2 C═CH—O—R 1 —O—CH═CH 2 (I) wherein R 1 represents either an alkylene group having 1 to 10 carbon atoms which may have a substituent, or a group represented by the following general formula (II): (wherein R 4 represents an alkylene group having 1 to 10 carbon atoms which may have a substituent, and m represents 0 or 1) in an organic solvent being used as the chemically amplified positive resist composition, said method further comprising a heat treatment step of heat-treating the substrate on which the resist pattern is formed at a temperature of 150 to 400° C. between the resist pattern forming step and the removing step.