Patent ID: 7476485
Filing Date: 2009-01-13
Classification: G03F

Abstract:
1. A substrate for a multilayer-resist film used in lithography, wherein, at least, a resist lower layer film which functions as an antireflection film is formed on a substrate using a resist lower layer film material which is comprised of a polymer having a repeating unit represented by the following general formula (1), or a resist lower layer film material which is comprised of a polymer having a repeating unit represented by the following general formula (1) blended with any one of polymers of vinyl alcohol, vinyl ether, allyl-ethers, a styrene derivative, an allyl-benzene derivative and olefins, or blended with a polymer by metathesis ring opening polymerization, wherein R wherein R Z is any one of dicyclopentadiene, bicyclo(4,3,0) nona-3,7-diene, 4-vinyl cyclohexene, norbornadiene, 5-vinyl-norborna-2-en, α-pinene, β-pinene, and limonene; a and b are positive numbers; and one or more layers of a resist upper layer film of a photoresist composition are formed on the lower layer film to form a multilayer-resist film.