Patent ID: 8263322
Filing Date: 2012-09-11
Classification: G03F

Abstract:
1. A method of forming a resist pattern, comprising: applying a positive chemically amplified resist composition to a support to form a first resist film, exposing a region on a portion of said first resist film, performing a post exposure bake treatment, and then performing developing to form a first resist pattern, and applying a negative chemically amplified resist composition to said support having said first resist pattern formed thereon, thereby forming a second resist film, exposing a region of said second resist film that includes a position in which said first resist pattern has been formed, performing a post exposure bake treatment at a bake temperature that increases solubility of said first resist film in an alkali developing solution and decreases solubility of said second resist film in an alkali developing solution, and then performing developing to simultaneously remove unexposed portions of the second resist film and the first resist pattern within the exposed portions of the second resist film to form a resist pattern.