Patent ID: 7803511
Filing Date: 2010-09-28
Classification: G03F,Y10S

Abstract:
1. A positive resist composition for immersion exposure comprising: (A) a resin capable of increasing its solubility in an alkali developer by an action of an acid, (B) a compound capable of generating an acid upon irradiation with actinic ray or radiation, (C) a compound, other than compound (B), capable of generating an acid upon irradiation with actinic ray or radiation, and (D) a surfactant, wherein the acid generated by compound (B) satisfies conditions of V≧230 and V/S≦0.93 taking van der Waals volume of the acid as V (Å wherein the compound (B) is a sulfonium salt compound having an anion represented by formula (Y): in formula (Y), n