Patent ID: 7615338
Filing Date: 2009-11-10
Classification: G03F

Abstract:
1. A method for forming a photoresist pattern, comprising: (a) coating a photoresist composition on an underlying layer of a semiconductor substrate; (b) performing a soft-bake onto the resultant structure of (a) to form a photoresist film; (c) exposing the photoresist film of (b) to light; (d) performing a post-bake onto the resulting structure of (c); (e) developing the resulting structure of (d) to form a first photoresist pattern; and (f) coating the coating composition on the first photoresist pattern to form a second photoresist pattern; wherein the coating composition consists of i) a water-soluble polymer having a repeating unit represented by the Formula 1, ii) an aqueous solvent and iii) an additive selected from the group consisting of a C wherein R