Patent ID: 8877429

Claim:
A resist pattern-forming method comprising: providing a first positive-tone radiation-sensitive resin composition on a substrate to form a first resist layer on the substrate; selectively exposing the first resist layer through a mask; developing the first resist layer to form a first resist pattern; applying a resist pattern-insolubilizing resin composition to the first resist pattern; baking or UV-curing the resist pattern-insolubilizing resin composition; washing the resist pattern-insolubilizing resin composition to form an insolubilized resist pattern that is insoluble in a developer and a second positive-tone radiation-sensitive resin composition; providing the second positive-tone radiation-sensitive resin composition on the substrate to form a second resist layer on the substrate on which the insolubilized resist pattern is formed; selectively exposing the second resist layer through a mask, and developing the second resist layer to form a second resist pattern, wherein the resist pattern-insolubilizing resin composition comprises: a solvent; and a resin comprising: a first repeating unit that includes a hydroxyl group in its side chain; and at least one of a second repeating unit derived from a monomer shown by a following formula (1-1) and a third repeating unit derived from a monomer shown by a following formula (1-2), wherein R 1 represents a hydrogen atom, a methyl group, or a trifluoromethyl group, A represents a methylene group, an ethylene group, or a propylene group, R 2 represents a group shown by a following formula (2-1) or a group shown by a following formula (2-2), R 3 represents a methylene group or an alkylene group having 2 to 6 carbon atoms, R 4 represents a hydrogen atom, a methyl group, or an ethyl group, and n is 0 or 1, wherein each R 34 independently represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms, and wherein the first repeating unit comprises at least one of a fourth repeating unit derived from hydroxyacrylanilide and a fifth repeating unit derived from hydroxymethacrylanilide.