Patent ID: 8198014

Claim:
A method for manufacturing an electronic device, comprising: forming a resist film over a work surface; forming a resist cover film over the resist film by use of a resist cover film forming material; irradiating the resist film with exposure light through the resist cover film by means of immersion exposure; developing the resist film to form a resist pattern; and patterning the work surface by etching using the resist pattern as a mask, wherein the resist cover film forming material consists of: a silicon-containing polymer which has at least an alkali-soluble group and which comprises (SiO 4/2 ), (R 1 t SiO( 4-t)/2 ), and (O 1/2 R 2 ) and is represented by the following general formula (1); and an organic solvent capable of dissolving the silicon-containing polymer: where R 1 represents at least one of a monovalent organic group, hydrogen atom and hydroxyl group, R 2 represents at least one of a monovalent organic group and hydrogen atom (where R 1 and R 2 each may appear twice or more, and at least one of R 1 and R 2 contains an alkali-soluble group), “t” represents an integer of 1 to 3,-“a,” “b,” and “c” represent the relative proportions of their units (where a≧0, b≧0 and c≧0, and “a,” “b,” and “c” are not 0 at the same time), and (R 1 t SiO (4-t)/2 ) b may appear twice or more, wherein the alkali-soluble group is a moiety represented by the following general formula (3): where “m” satisfies the condition 0≦m≦5, and wherein the organic solvent is an aliphatic alkanol having 3 or more carbon atoms.