Patent ID: 8003540
Filing Date: 2011-08-23
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device, the method comprising: forming an underlying layer over a semiconductor substrate; forming a hard mask layer over the underlying layer; forming first photoresist patterns over the hard mask layer; forming a hardening layer on the first photoresist patterns, wherein the hardening layer is formed on the first photoresist patterns by an exposure process using an ultraviolet beam or an electron beam; forming second photoresist patterns between the first photoresist patterns, the first and second photoresist patterns being defined on substantially the same plane, wherein the first and second photoresist patterns are formed using the same mask; etching the hard mask layer with the first and second photoresist patterns as masks to form a hard mask pattern; etching the underlying layer with the first and second photoresist patterns and the hard mask pattern; and removing the first and second photoresist patterns, and the hard mask pattern.