Patent ID: 8329385
Filing Date: 2012-12-11
Classification: G03F,H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising: forming a first mask material film on a workpiece film formed on a semiconductor substrate; forming a resist pattern directly on the first mask material film; forming a second mask material film having a desired film thickness on the first mask material film so as to cover the resist pattern; carrying out etchback on the second mask material film so as to form sidewall spacers on sidewalls of the resist pattern and to expose the resist pattern and a portion of the first mask material film; simultaneously processing the resist pattern and the first mask material film to form a mask pattern including the sidewall spacers and portions of the first mask material film covered by the sidewall spacers; and processing the workpiece film using the mask pattern as a mask, wherein the first mask material film is a carbon film including carbon as a main component.