Patent Number: 8,067,148

Title: Pattern forming method

Abstract: A resist film of a positive type containing a photoacid generator is formed on a substrate. Then, pattern exposure is performed by selectively irradiating the resist film with exposure light. Thereafter, first heating is performed on the resist film subjected to the pattern exposure. After the heating, first development is performed on the resist film, thereby forming a first resist pattern. Subsequently, the first resist pattern is exposed to a solution containing a thermal acid generator and containing neither polymer nor a cross-linking agent. After the exposure, second heating is performed on the first resist pattern. Second development is then performed on the first resist pattern, thereby forming a second resist pattern made of the first resist pattern having a reduced size.

Inventors: Endou; Masayuki (Toyama, JP), Sasago; Masaru (Osaka, JP)

Assignee: Panasonic Corporation

International Classification: G03F 7/26 (20060101)

Expiration Date: 2020-11-29 0:00:00