Patent ID: 8541159
Filing Date: 2013-09-24
Classification: C09D,G03F,Y10S

Abstract:
1. A positive resist composition for immersion exposure, comprising the following (A) to (D): (A) a resin capable of decomposing by an action of an acid to increase a solubility of the resin in an alkali developer; (B) a compound capable of generating an acid upon irradiation with an actinic ray or radiation; (C) a resin having at least either one of a fluorine atom and a silicon atom; and (D) a mixed solvent containing at least one kind of a solvent selected from the group consisting of solvents represented by any one of the following formulae (S1) to (S3), in which a total amount of the at least one kind of the solvent is from 3 to 20 mass % based on all solvents of the mixed solvent (D): wherein each of R R wherein the resin (C) contains at least one group selected from the following (x) to (z): (x) an alkali-soluble group; (y) a group capable of decomposing by the action of an alkali developer to increase the solubility in an alkali developer, and (z) a group capable of decomposing by the action of an acid; and the mixed solvent (D) is a mixed solvent containing only propylene glycol monomethyl ether acetate (PGMEA) and γ-butyrolactone.