Patent ID: 8877429
Filing Date: 2014-11-04
Classification: G03F,H01L

Abstract:
1. 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: wherein R wherein each R 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.