Patent ID: 8007979

Claim:
A gap fill material forming composition comprising: a crosslinking agent having at least two crosslink-forming functional substituents; a solvent selected from the group consisting of butyl lactate, propylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, and cyclohexanone; and a polymer having a weight average molecular weight of 5,000 to 20,000 and containing components having a molecular weight of 3,000 or less in a rate of 20% or less, the polymer consisting of a structural unit of formula (1) where R 1 is a hydrogen atom, a methyl group, a chlorine atom or a bromine atom; R 2 is a hydrogen atom or a hydroxy group; p is a number of 1, 2, 3 or 4; q is a number of 0, 1, 2 or 3; wherein the composition is used in manufacture of a semiconductor device by a method comprising coating a photoresist on a semiconductor substrate having a hole with aspect ratio shown in height/diameter of 1 or more, and transferring an image to the semiconductor substrate by use of a lithography process.