Patent ID: 10620537

Abstract:
A resist underlayer film composition for use in a multilayer resist method, containing one or more compounds shown by formula (1), and an organic solvent, WX)n  (1) W represents an n-valent organic group having 2 to 50 carbon atoms. X represents a monovalent organic group shown by formula (1X). “n” represents an integer of 1 to 10,  The dotted line represents a bonding arm. R01 represents an acryloyl or methacryloyl group. Y represents a single bond or a carbonyl group. Z represents a monovalent organic group having 1 to 30 carbon atoms. A resist underlayer film composition can be cured by high energy beam irradiation and form a resist underlayer film having excellent filling and planarizing properties and appropriate etching resistance and optical characteristics in a fine patterning process by a multilayer resist method in the semiconductor apparatus manufacturing process.