Patent ID: 9244357
Filing Date: 2016-01-26
CPC Classification: G03F

Claim Text:
1. A method for forming a resist pattern comprising: a step of forming a resist film on a support by using a resist composition which generates an acid upon exposure; a step of exposing the resist film; and a step of heating the exposed resist film and conducting patterning by negative type development with a developing solution containing an organic solvent, wherein the resist composition contains a resin component (A) which exhibits decreased solubility in the organic solvent under the action of the acid and which contains a high-molecular weight compound (A1) having a constituent unit (a0) represented by the following general formula (a0-1), wherein the constituent unit (a0) exhibits increased polarity under the action of the acid: wherein R represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a halogenated alkyl group having 1 to 5 carbon atoms; V