Patent ID: 8329384
Filing Date: 2012-12-11
Classification: G03F,H01L

Abstract:
1. A resist-modifying composition comprising a base resin, an alcohol-based solvent, and a crosslinker, said base resin being a polymer comprising recurring units having the general formula (1): wherein A 1 is a straight, branched or cyclic C 2 -C 8 alkylene group which may contain an ether group, R 1 is hydrogen or methyl, R 2 is each independently a C 1 -C 4 alkyl group or two R 2 may bond together to form a C 4 -C 10 heterocycle with the nitrogen atom to which the are attached and said crosslinker being a water-insoluble crosslinker having the general formula (3) or (4) or formula (C3): wherein m is each independently an integer of 2 to 6, A 2 is a single bond, m-valent C 1 -C 20 hydrocarbon group, or m-valent C 6 -C 15 aromatic group, A 3 is a m-valent C 2 -C 20 hydrocarbon group which may contain a hydroxyl or ether group, R 4 is each independently hydrogen or methyl, R 5 is hydrogen or a C 1 -C 4 alkyl group, and R 6 is methyl or ethyl.