Patent ID: 7781844
Filing Date: 2010-08-24
Classification: H01L

Abstract:
1. A semiconductor device comprising an NMIS transistor over a first active region of a semiconductor substrate, the NMIS transistor including: a first gate dielectric film over the first active region; a first gate electrode on the first gate dielectric film; a first side-wall dielectric film on side surfaces of the first gate dielectric film and the first gate electrode; a first source/drain region in the first active region outside the first side-wall dielectric film; a first silicide layer in a top-layer portion of the first source/drain region; a second side-wall dielectric film formed on the first silicide layer to cover around a corner at which the side surface of the first side-wall dielectric film meets an upper surface of the first silicide layer; and a first stressor film for exerting a tensile stress on a channel region in a gate length direction, the first stressor film covering the first gate electrode, the first side-wall dielectric film, and the second side-wall dielectric film, wherein the first stressor film is not in contact with a surface of the corner at which the side surface of the first side-wall dielectric film meets the upper surface of the first silicide layer.