Patent ID: 8318410
Filing Date: 2012-11-27
Classification: C08G,G03F

Abstract:
1. A resist underlayer film forming composition for lithography comprising: a polymer having a disulfide bond in backbone thereof: and a solvent: wherein the polymer has a repeating unit structure of Formula (1): where R 1 to R 5 are each independently a hydrogen atom, a C 1-6 alkyl group, a C 3-6 alkenyl group, a benzyl group, or a phenyl group, where the phenyl group is optionally substituted with at least one group selected from a group consisting of a C 1-6 alkyl group, a halogen atom, a C 1-6 alkoxy group, a nitro group, a cyan group, and a C 1-6 alkylthio group, and R 1 and R 2 or R 3 and R 4 are optionally bonded to each other to form a C 3-6 ring; A Q n is the number of repeating unit structures which is an integer of 5 to 100.