Patent ID: 8703395
Filing Date: 2014-04-22
Classification: G03F,H01L

Abstract:
1. A pattern-forming method comprising: applying a photoresist composition to a substrate to form a resist film, the photoresist composition including an acid generator and a first polymer that includes an acid-dissociable group; exposing the resist film; developing the resist film using a developer having an organic solvent content of 80 mass % or more to form a prepattern of the resist film; applying a mixture of a plurality of second polymers in a space defined by the prepattern, the plurality of second polymers each being a polymer selected from the group consisting of a homopolymer and a random copolymer; heating the mixture of a plurality of second polymers to form a polymer film having a phase separation structure in the space defined by the prepattern, the phase separation structure including a first phase distributed along the prepattern and a second phase not adjacent to the prepattern; and removing the second phase of the phase separation structure of the polymer film while remaining the first phase of the phase separation structure of the polymer film.