Patent ID: 8906600
Filing Date: 2014-12-09
Classification: B82Y,C08F,G03F,Y10T

Abstract:
1. A resist pattern forming method, comprising: in the following order, (1) a step of forming a film on a substrate by using a positive resist composition; (2) a step of exposing the film; and (4) a step of performing development by using an alkali developer after the exposing, wherein the positive resist composition contains (A) a polymer compound having a repeating unit represented by the following formula (I), a thickness of the film formed in the step (1) is from 15 to 40 nm, and an alkali component concentration in the alkali developer is from 0.5 to 1.1 mass %: wherein each of R Ar n represents an integer of 1 to 4; and each of n number of Y's independently represents a group capable of leaving by an action of an acid, said group being a structure represented by formula (II): wherein in formula (II), each of L M represents a single bond or a divalent linking group; Q represents an alkyl group, a cycloalkyl group, an alicyclic group, an aromatic ring group, an amino group, an ammonium group, a mercapto group, a cyano group or an aldehyde group, provided that the alicyclic group and the aromatic ring group may contain a heteroatom; and at least two members of Q, M and L