Patent ID: 7745104
Filing Date: 2010-06-29
Classification: G03F

Abstract:
1. A bottom resist layer composition for a multilayer-resist film used in lithography comprising, at least, a polymer comprising a repeating unit represented by the following general formula (1), wherein R X represents any one of a single bond, —Y—C(═O)—, and a linear or branched alkylene group having 1-4 carbon atoms; Y represents a single bond or a linear or branched alkylene group having 1-4 carbon atoms; Z represents any one of a methylene group, an oxygen atom, and a sulfur atom; R R R n represents an integer of 0 to 4; p and q independently represent an integer of 0 to 6; R a, b, c, d, and e satisfy 0<a<1.0, 0≦b≦0.9, 0≦c≦0.9, 0≦d≦0.9, 0≦e≦0.9, and 0<b+c+d+e<1.0.