Patent ID: 9494864
Filing Date: 2016-11-15
CPC Classification: C08G,C09D,G03F,H01L

Claim Text:
1. A resist overlayer film forming composition comprising: a polymer containing a unit structure of (Formula 1-1): (in (Formula 1-1), Ar 1 is a divalent organic group that contains 1 to 3 benzene ring(s) and optionally contains a hydroxy group; Ar 2 is a benzene ring group, a naphthalene ring group, or an anthracene ring group; each of the hydroxy group and R 1 is a substituent in place of a hydrogen atom on a ring of Ar 2 ; R 1 is a halogen atom, a carboxy group, a nitro group, a cyano group, a C 1-6 alkoxy group, a C 1-6 linear or branched saturated alkyl group, or a C 1-6 linear or branched saturated halogenated alkyl group; each of n1 and n2 is independently an integer of 0 to 9, and a maximum value of (n1+n2) is 9); and a solvent, wherein the solvent comprises any of 1-heptanol, 2-methyl-1-butanol, 2-methyl-2-butanol, 4-methyl-2-pentanol, or cyclopentanol.