Patent ID: 7790351
Filing Date: 2010-09-07
Classification: G03F,Y10S

Abstract:
1. A positive resist composition comprising: (A) a resin that increases its solubility in an alkali developer by the action of an acid, and has a repeating unit having a lactone group; (B) a compound being capable of generating an acid when irradiated with an actinic ray or a radiation; (C) a resin having at least one of a silicon-containing repeating unit represented by general formula (I) and a silicon-containing repeating unit represented by general formula (II) and being stable to acids but insoluble in an alkali developer; and (D) a solvent: wherein L represents a single bond or a divalent linking group; R R R Q represents an alicyclic structure; and k represents an integer of from 0 to 3.