Patent ID: 8592128

Claim:
An actinic ray-sensitive or radiation-sensitive resin composition, comprising: (A) a compound capable of generating an acid upon irradiation with an actinic ray or radiation; (B) a resin capable of increasing a dissolution rate of the resin (B) in an alkali developer by an action of an acid, the resin (B) containing a repeating unit represented by formula (3); and (D) a low molecular compound having a group capable of leaving by an action of an acid: wherein A represents an ester bond or a group represented by —CONH—; each R 0 independently represents an alkylene group, a cycloalkylene group or a combination thereof, and when a plurality of R 0 's are present, the plurality of R 0 's are the same or different; each Z independently represents an ether bond, an ester bond, an amide bond, a urethane bond or a urea bond, and when a plurality of Z's are present, the plurality of Z's are the same or different; R 8 represents a monovalent organic group having a lactone structure; n is a repetition number of the structure represented by —R 0 —Z— in the repeating unit represented by formula (3) and represents an integer of 1 to 5; and R 7 represents a hydrogen atom, a halogen atom or an alkyl group; and further wherein the component (D) is an amine derivative having a group capable of decomposing by the action of an acid on the nitrogen atom.