Patent ID: 8748076

Claim:
A resist composition comprising: (A) a polymer containing one or more repeating units having a structure shown by the following general formula (1) and/or one or more repeating units having a structure shown by the following general formula (2), wherein the polymer further contains a repeating unit having an adhesive group of a lactone ring and optionally further contains one or more of an acid labile unit shown by the following general formula (6) and/or a repeating unit having an adhesive group of a hydroxyl group, the composition ratios of the respective repeating units that constitute the polymer of the component (A) satisfying a+b+c+d= 100, 30 ≦a≦ 80, 0 ≦b≦ 40, 0 ≦c≦ 20, and 20 ≦d≦ 50, wherein total content of the repeating units having a structure shown by the following general formulae (1) and/or (2) is “a %” by mole, total content of the acid-labile units shown by the following general formula (6) is “b %” by mole, total content of the repeating units having a hydroxyl group is “c %” by mole, and total content of the repeating units having a lactone ring is “d %” by mole, and an alkaline-solubility of the polymer is increased by an acid, (B) a photo acid generator generating, in response to a high energy beam, a sulfonic acid shown by the following general formula (3), and (C) an onium sulfonate shown by the following general formula (4); wherein, each R 1 and R 3 independently represents a hydrogen atom or a methyl group, and each R 2 and R 4 independently represents a linear, a branched, or a cyclic alkyl group having 1 to 7 carbon atoms and optionally containing an oxygen atom; wherein R 12 represents a hydrogen atom or a methyl group, x represents 0 or 1, and L represents an acid-labile group; wherein, R 5 represents a hydrogen atom or a trifluoromethyl group, R 6 represents a linear, a branched, or a cyclic alkyl group, substituted or unsubstituted, having 1 to 23 carbon atoms, or an aryl group, substituted or unsubstituted, having 6 to 14 carbon atoms; and wherein, R 7 represents a monovalent hydrocarbon group optionally containing a hetero atom, excluding the cases that R 7 represents a vinyl group and an isopropenyl group, n represents an integer of 1 to 3, and M + represents a counter cation having a substituent and is any of a sulfonium cation, an iodonium cation, and an ammonium cation.