Patent ID: 7326513
Filing Date: 2008-02-05
Classification: G03F

Abstract:
1. A positive working resist composition comprising (A1) a resin containing a repeating unit represented by formula (1) shown below and a repeating unit represented by formula (2) shown below and having a property of being insoluble or sparingly soluble in an alkali developing solution and becoming soluble in an alkali developing solution by the action of an acid, (B) a compound capable of generating sulfonic acid upon irradiation with active rays or radiations in an amount of from 5 to 20% by weight based on the total solid content of the positive working resist composition, and (D) a compound capable of generating a carboxylic acid upon irradiation with active rays or radiations in an amount of from 0.05 to 3% by weight based on the total solid content of the positive working resist composition: wherein R