Patent ID: 7807343
Filing Date: 2010-10-05
Classification: G03F,H01L

Abstract:
1. A method of forming a semiconductor device comprising: providing a semiconductor substrate including a non-rectangular active region; forming a first mask pattern on the semiconductor substrate, the first mask pattern defining a plurality of elongated gate structures of like width and predetermined pitch; etching a first portion of the substrate using the first mask pattern to form the defined plurality of elongated gate structures on the substrate, the gate structures extending transversely over the active region; the gate structures being defined and formed so that all of the gate structures extend at least for targeted extension distances beyond the active region, and some of the gate structures extend beyond the active region for portions greater than the targeted extension distances; forming a second mask pattern on the semiconductor substrate, the second mask pattern defining the portions greater than the targeted extension distances of the some of the gate structures; and etching a second portion of the substrate using the second mask pattern to remove the defined portions greater than the targeted extension distances from the formed gate structures.