Patent ID: 8030149
Filing Date: 2011-10-04
Classification: H01L

Abstract:
1. A method comprising: forming a gate and forming a gate spacer on a side wall of the gate over a semiconductor substrate including a silicide region and a non-silicide region; forming a first oxide film over the semiconductor substrate including the gate and the gate spacer; forming a photo resist pattern in an overhang structure on the first oxide film in the silicide region to expose the first oxide film in the non-silicide region; forming a second oxide film over the semiconductor substrate including the photo resist pattern; removing the second oxide film from the photo resist pattern in the silicide region while maintaining the second oxide film over the first oxide film in the non-silicide region; and then removing the first oxide film to expose an upper surface of the gate and the semiconductor substrate of the silicide region while maintaining the first oxide film in the non-silicide region.