Patent ID: 8815494
Filing Date: 2014-08-26
Classification: C08L,C09D,G03F,H01L

Abstract:
1. A production method of a semiconductor device, comprising: applying a resist underlayer film forming composition comprising a silane compound containing an anion group, onto a semiconductor substrate and baking the composition to form a resist underlayer film; wherein the silane compound containing an anion group is a hydrolyzable organosilane in which an organic group containing an anion group is bonded to a silicon atom and the anion group forms a salt structure, a hydrolysis product thereof, or a hydrolysis-condensation product thereof, wherein the hydrolyzable organosilane is represented by Formula (1): where R 1 is an anion group or an organic group containing an anion group and is bonded to a silicon atom through a Si—C bond; R 2 is an alkyl group, an aryl group, a halogenated alkyl group, a halogenated aryl group, an alkenyl group, or an organic group having an epoxy group, an acryloyl group, a methacryloyl group, a mercapto group, or a cyano group and is bonded to a silicon atom through a Si—C bond; R 3 is an alkoxy group, an acyloxy group, or a halogen group; a is an integer of 1 or 2; b is an integer of 0 or 1; and a+b is an integer of 1 or 2; applying a composition for a resist onto the resist underlayer film to form a resist film; exposing the resist film to light; developing the resist after the exposure to obtain a resist pattern; etching the resist underlayer film using the resist pattern as a protecting film; and processing the semiconductor substrate using the patterned resist and the patterned resist underlayer film.