Patent ID: 8828304
Filing Date: 2014-09-09
Classification: B29C,B29K,B82Y,G03F,Y10S

Abstract:
1. A method of forming a pattern, comprising the steps of: forming an organic layer containing a novolak resin or an acrylic resin on a support substrate; forming a resist layer on the organic layer with a chemically amplified negative resist composition containing a silsesquioxane resin, a cross-linking agent and an acid generator; pressing a light transmissive type mold having a partially light-resistant portion against the resist layer; exposing the resist layer from above the mold; detaching the mold; removing an uncured portion of the resist layer with a developer to form an upper resist pattern; etching the organic layer using an oxygen plasma, with the upper resist pattern as a mask to form a lower resist pattern; and forming a pattern on the support substrate by etching the support substrate with a fluorocarbon gas, using the upper resist pattern and the lower resist pattern as a mask, wherein the silsesquioxane resin consists of one or more constituent units shown by the following general formula (a-1) wherein, X represents an alkylene group having 1 to 15 carbon atoms or a divalent aromatic hydrocarbon group having 6 to 15 carbon atoms; R 1 represents an alkylene group having 1 to 5 carbon atoms; R 2 represents a hydrogen atom, and one or more constituent units shown by the following general formula (a-2) wherein, R 3 represents an alkyl group having 1 to 15 carbon atoms or an aromatic hydrocarbon group having 6 to 15 carbon atoms, and wherein the acid generator is represented by general formula (B-1) or (B-2):