Patent ID: 7989145
Filing Date: 2011-08-02
Classification: G03F,H01L

Abstract:
1. A method for forming a fine pattern of a semiconductor device, comprising: forming a spin-on-carbon layer over an underlying layer of a semiconductor substrate; forming an anti-reflection film including a silicon containing polymer over the spin-on-carbon layer: forming a first photoresist pattern over the anti-reflection film; selectively patterning the anti-reflection film using the first photoresist pattern as an etching mask to form an anti-reflection pattern exposing the spin-on-carbon layer; forming a second photoresist film including a silicon containing polymer over the anti-reflection pattern; selectively patterning the second photoresist film to form a second photoresist pattern between the anti-reflection patterns; and etching the spin-on-carbon layer using the anti-reflection patterns and the second photoresist patterns as an etching mask.