Patent ID: 7011923

Claim:
A negative photoresist composition, comprising: (a) a radiation sensitive acid generator; (b) a first polymer comprising a repeating unit from a first monomer (1), wherein the first monomer (1) has the structure: and (c) a second polymer comprising a repeating unit from a second monomer (2), wherein the second monomer (2) has the structure: wherein G and M independently are polymerizable backbone moieties, wherein Z is a linking moiety comprising one of —C(O)O—, —C(O)—, —OC(O)—, —O—C(O)—C(O)—O—, wherein Y is one of an alkylene group with 1 to 60 carbons, an arylene group with 6 to 60 carbons, a semi- or perfluorinated alkylene group with 1 to 60 carbons, a semi- or perfluorinated arylene group with 6 to 60 carbons, wherein U is one of an alkylene group with 1 to 60 carbons, a semi- or perfluorinated alkylene group with 1 to 60 carbons, a semi- or perfluorinated arylene group with 6 to 60 carbons, —C(O)O—R, —C(O)—R, —OC(O)—R, —O—C(O)—C(O)—O—R, where R represents one of an alkylene group with 1 to 60 carbons, a semi- or perfluorinated alkylene group with 1 to 60 carbons, a semi- or perfluorinated arylene group with 6 to 60 carbons, wherein p, q, and x are independently 0 or 1, wherein R 1 and R 2 independently comprise one of hydrogen and a straight or branched alkyl group with 1 to 6 carbons, wherein the acid generator is adapted to generate an acid upon exposure to imaging radiation characterized by a wavelength, and wherein the resist composition is soluble in an aqueous alkaline developer solution before exposure to the imaging radiation, and is insoluble in the aqueous alkaline developer solution after exposure to the imaging radiation.