Patent ID: 8877423

Claim:
An actinic ray-sensitive or radiation-sensitive resin composition, comprising: (A) a resin that contains a repeating unit represented by the following formula (I), a repeating unit represented by the following formula (II) and a repeating unit represented by the following formula (III-a); (B) a compound capable of generating an acid upon irradiation with an actinic ray or radiation; and (C) a solvent, wherein the solvent (C) contains ethyl lactate: wherein in formula (II), each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group or a cycloalkyl group, and R 3 represents an alkyl group; and in formula (III-a), each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group or a cycloalkyl group, and R 4 represents a group containing a cycloalkyl group.