Patent ID: 10295905

Abstract:
A resist composition which generates an acid upon exposure and whose solubility on a developing solution changes under the action of the acid, including a polymer compound having units represented by formulas (a0-1), (a0-2), and (a0-3) in an amount of 0 to 10 mol %. In the formulas, R is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a halogenated alkyl group having 1 to 5 carbon atoms, Va01 and Va03 are a divalent hydrocarbon group, na01 and na03 each are an integer of 0 to 2, Ra0″ is a specific acid dissociable group, Va02 is a divalent linking group containing a hetero atom or a single bond, Ra07 is a monovalent organic group, na021 is an integer of 0 to 3, and na022 is an integer of 1 to 3.