Patent ID: 7217493
Filing Date: 2007-05-15
Classification: G03F,Y10S

Abstract:
1. A positive resist composition comprising (A) polysiloxane or polysilsesquioxane that has a property of increasing solubility in an alkali developing solution by the action of an acid and contains a group capable of being decomposed with an acid, (B) a compound that generates a sulfonic acid upon irradiation of an actinic ray or radiation, (C) an organic basic compound, and (D) a compound that generates a carboxylic acid upon irradiation of an actinic ray or radiation, wherein an amount of the compound that generates a sultonic acid upon irradiation of an actinic ray or radiation is from 6 to 20% by weight based on the total solid content of the positive resist composition, and the polysiloxane or polysilsesquioxane (A) has a structure represented by formula (1) shown below in the side chain thereof: wherein, J1 represents an alkylene group; J2 represents an arylene group or a cycloalkylene group; J3 represents a group selected from —O—, —N(R