Patent ID: 8507172
Filing Date: 2013-08-13
Classification: G03F

Abstract:
1. A positive resist composition comprising: (A) a compound capable of generating an acid upon irradiation with actinic rays or radiation; (B) a resin of which solubility in an alkali developer increases under action of an acid; (C) a compound capable of decomposing under action of an acid to generate an acid; and (HR) a hydrophobic resin, wherein the pKa of the acid generated from the compound (C) is less than or equal to 3; and the resin (B) comprises at least one of a repeating unit represented by formula (Ia) and a repeating unit represented by formula (Ib): wherein Xa Ry Z represents an (n+1)-valent linking group; Ry L n represents an integer of 1 to 3.