Patent ID: 8632938

Claim:
An actinic-ray- or radiation-sensitive resin composition comprising a hydrophobic resin (HR) containing a fluorine atom, wherein the hydrophobic resin (HR) comprises any of repeating units (a) of general formula (I) or (II) below: in which each of R 1 , R 2 , R 3 and R 4 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a carboxyl group, an alkyl group, a cycloalkyl group, an alkyloxy group, an alkylcarbonyl group, an arylcarbonyl group, an alkylcarbonyloxy group, an arylcarbonyloxy group, an alkyloxycarbonyl group, an aryloxycarbonyl group, an alkyl ether group, an aryl ether group, a hydroxyl group, an alkyl amido group, an aryl amido group, an aryl group, a cyano group, an acid decomposable group or an alkali decomposable group, provided that the hydrogen atoms of the alkyl group, cycloalkyl group, alkyloxy group, alkylcarbonyl group, arylcarbonyl group, alkylcarbonyloxy group, arylcarbonyloxy group, alkyloxycarbonyl group, aryloxycarbonyl group, alkyl ether group, aryl ether group, alkyl amido group, aryl amido group, aryl group, acid decomposable group and alkali decomposable group may be partially or wholly replaced by fluorine atoms, and provided that any two of the R 1 , R 2 , R 3 and R 4 may be bonded to each other to thereby form a ring, wherein the content of hydrophobic resin (HR) is in the range of 0.01 to 10 mass % based on the total solids of the actinic-ray- or radiation-sensitive resin composition, and the hydrophobic resin (HR) further comprises a repeating unit with a lactone structure, wherein the actinic-ray- or radiation-sensitive resin composition further comprises: (A) a resin that when acted on by an acid is decomposed to thereby exhibit an increased solubility in an alkali developer, (B) a compound that when exposed to actinic rays or radiation, generates an acid, and (C) a solvent, and wherein the resin (A) comprises at least one of the repeating units of general formula (1) and at least one of the repeating units of general formula (2): in the general formulae (1) and (2), each of R 1 and R 3 independently represents a hydrogen atom, an optionally substituted methyl group or any of the groups of the formula —CH 2 —R 9 in which R 9 represents a hydroxyl group or a monovalent organic group, each of R 2 , R 4 , R 5 and R 6 independently represents an alkyl group or a cycloalkyl group, and R represents an atomic group required for forming an alicyclic structure in cooperation with a carbon atom.