COMPOSITION FOR FORMING RESIST UNDERLAYER FILM, AND RESIST UNDERLAYER FILM

摘要

A composition for forming a resist underlayer film of the present invention is capable of forming a resist underlayer film which has a good matching property with a resist, by including a siloxane polymer component having a repeating unit which contains a monovalent organic group containing a sulfur atom. Thus, the composition of the resist layer film capable of forming a resist underlayer film which has a good matching property with a resist is realized.