Patent ID: 7749678
Filing Date: 2010-07-06
Classification: G03F,Y10S

Abstract:
1. A photoresist composition comprising (A) a resin that is decomposed by the action of an acid to increase solubility in an alkali developing solution, (B) a compound that generates an acid upon irradiation of an actinic ray or radiation, and (C1) a nonionic compound having a molecular weight of 1,000 or less and containing an aliphatic ring and a phenol ring, wherein the resin (A) comprises a repeating unit having a group represented by the following formula (I) and a repeating unit which has a group represented by at least one of the following formulae (V-I) to (V-4) or which is represented by the following formula (IV): wherein R R R W R m and n each independently represents an integer of from 0 to 3, provided that m+n is from 2 to 6, and wherein the photoresist composition is suitable for exposure with an ArF excimer laser.