Patent ID: 8771916

Claim:
An actinic ray-sensitive or radiation-sensitive resin composition, comprising: (A) a resin capable of increasing a solubility of the resin (A) in an alkali developer by an action of an acid; and (C) a resin having at least either a fluorine atom or a silicon atom and containing (c) a repeating unit having at least two or more polarity conversion groups represented by —COO— in the structure represented by formula (KA-1) or (KB-1): wherein Z ka represents an alkyl group, a cycloalkyl group, an ether group, a hydroxyl group, an amide group, an aryl group, a lactone ring group or an electron-withdrawing group, and when a plurality of Z ka 's are present, the plurality of Z ka 's are the same or different; each Z ka may combine with every other Z ka to form a ring; nka represents an integer of 0 to 10; each of X kb1 and X kb2 independently represents an electron-withdrawing group; each of nkb and nkb′ independently represents 0 or 1; and each of R kb1 to R kb4 independently represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group or an electron-withdrawing group, at least two members of R kb1 , R kb2 and X kb1 may combine with each other to form a ring, and at least two members of R kb3 , R kb4 and X kb2 may combine with each other to form a ring, wherein: the resin (A) contains no fluorine atom and no silicon atom; the resin (A) includes a repeating unit represented by the following Formula (AI): wherein in formula (AI), Xa 1 represents a hydrogen atom, a methyl group which may have a substituent, or a group represented by —CH 2 —R 9 ; R 9 represents a hydroxyl group or a monovalent organic group; T represents a single bond or a divalent linking group; each of Rx 1 to Rx 3 independently represents a linear or branched alkyl group or a monocyclic or polycyclic cycloalkyl group; and two members out of Rx 1 to Rx 3 may combine to form a monocyclic or polycyclic cycloalkyl group; and the repeating unit (c) has a structure represented by the following formula (KY-2): wherein each of R ky6 to R ky10 independently represents a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, a carbonyl group, a carbonyloxy group, an oxycarbonyl group, an ether group, a hydroxyl group, a cyano group, an amide group or an aryl group; two or more members of R ky6 to R ky10 may combine with each other to form a monocyclic or polycyclic structure; R ky5 represents an electron-withdrawing group; and R kb1 , R kb2 and nkb have the same meanings as in formula (KB-1).