Patent ID: 8343711
Filing Date: 2013-01-01
Classification: G03F,H01L

Abstract:
1. A patterning process to form a pattern on a substrate by a lithography, wherein the patterning process comprises: (1) a step of forming a photoresist pattern, involving forming an organic underlayer film on a substrate, forming a resist film on the organic underlayer film by using a chemically amplified positive photoresist composition, exposing the resist film to a high energy beam, and then developing the resist film by a developer, (2) a step of attaching an alkaline solution containing an alkaline substance onto the photoresist pattern, and then removing the excess alkaline solution, (3) a step of applying a solution of a siloxane polymer crosslinkable by action of the alkaline substance onto the photoresist pattern attached with the alkaline solution to fill a space between neighboring photoresist patterns with the siloxane polymer thereby forming a crosslinked part by crosslinking the siloxane polymer near the photoresist patterns to form a repeating structure arranged sequentially in the order of the photoresist pattern, the crosslinked part, the uncrosslinked siloxane polymer, and the crosslinked part, and (4) a step of removing the uncrosslinked siloxane polymer and the photoresist pattern.