Patent ID: 7235342
Filing Date: 2007-06-26
Classification: G03F,Y10S

Abstract:
1. A negative photoresist composition, comprising: (a) a radiation sensitive acid generator; (b) a hydroxy-containing additive having the structure: wherein Q is one of an alkyl group with 4 to 50 carbons, an aryl group with 4 to 50 carbons, a semi- or perfluorinated alkyl group with 4 to 50 carbons, a semi- or perfluorinated aryl group with 4 to 50 carbons, an alkaryl group with 4 to 50 carbons, an aralkyl group with 4 to 50 carbons, a semi- or perfluorinated alkaryl group with 4 to 50 carbons, and a semi- or perfluorinated aralkyl group with 4 to 50 carbons; (c) a resist polymer comprising a repeating first monomer unit derived from a first monomer comprising the structure: (d) at least one of a solvent and a quencher, wherein M is a polymerizable backbone moiety, 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, an arylene group, a semi- or perfluorinated alkylene group, and a semi- or perfluorinated arylene group, wherein p is 0 or 1, wherein q is 0 or 1, wherein R1, R2, R3, and R4 independently comprise one of hydrogen and a straight or branched alkyl group with 1 to 6 carbons, wherein the resist polymer is soluble in an aqueous alkaline developer solution, wherein the acid generator is adapted to generate an acid upon exposure to imaging radiation characterized by a wavelength, wherein the resist polymer is adapted to chemically react with the additive in the presence of the acid in a non-crosslinking chemistry to generate a product that is insoluble in the developer solution, and wherein the solvent comprises at least one of an ether, a glycol ether, an aromatic hydrocarbon, a ketone, and an ester.