Patent ID: 9244349
Filing Date: 2016-01-26
CPC Classification: G03F

Claim Text:
1. A positive resist composition comprising a base component (A) comprising a polymeric compound (A1) comprising a structural unit (a1) derived from an acrylate ester containing an acid dissociable, dissolution inhibiting group, an acid-generator component (B) which generates acid upon exposure, and a fluorine-containing polymer component (F), the fluorine-containing polymer component (F) comprising: a fluorine-containing copolymer (F2) comprising a structural unit (F-1) represented by general formula (F-1) and a structural unit (F-2) derived from an acrylate ester containing an acid dissociable, dissolution inhibiting group, wherein the amount of the fluorine-containing polymer component (F) relative to 100 parts by weight of the base component (A) is in the range of 0.1 to 20 parts by weight, wherein the amount of the structural unit (F-1) based on the combined total of all structural units constituting the component (F2) is 20 mol % or more, and the polymeric compound (A1) excludes the fluorine-containing polymer component (F): wherein R c represents a hydrogen atom or a methyl group; each of R1 and R 2 independently represents a hydrogen atom, an alkyl group of 1 to 4 carbon atoms or a fluorinated alkyl group of 1 to 4 carbon atoms; R 3 represents a fluorine atom or a fluorinated alkyl group of 1 to 4 carbon atoms; and R4 represents a linear alkyl group of 1 to 4 carbon atoms or a linear fluorinated alkyl group of 1 to 4 carbon atoms.