Patent ID: 7510820
Filing Date: 2009-03-31
Classification: G03F

Abstract:
1. A photoresist undercoat-forming material for forming an undercoat among lithographic multilayer resist coatings, comprising a copolymer which comprises recurring units having the general formula (1): wherein R 1 and R 6 each are hydrogen or methyl, R R m is 1 or 2, n is an integer of 0 to 4, p is an integer of 0 to 6, a, b, c, and e are numbers in the range: 0<a<1.0, 0≦b≦0.8 0≦c≦0.8, 0≦e≦0.8, and 0≦b+c+e<1.0, and said organic group of R 7 has the formula selected from the group consisting of the to following formulae: wherein each dotted line in the formulae represents a valence bond.