Patent ID: 6825528
Filing Date: 2004-11-30
Classification: H01L

Abstract:
A semiconductor device, comprising:a semiconductor substrate comprising an isolation region and an active region; a gate electrode provided on the active region via a gate insulating film, at least part of a side of the gate being covered with a gate electrode side wall insulating film; and a source region and a drain region provided on respective sides of the gate electrode via the gate electrode side wall insulating film, wherein: the source region includes a first source region provided above a first surface where the active region contacts with the gate insulating film, and a second source region provided below the first surface; the drain region includes a first drain region provided above the first surface, and a second drain region provided below the first surface; at least one of the source and drain regions has a second surface for contacting a contact conductor, the second surface being tilted with respect to the first surface; at least part of the first source region is provided on the isolation region; at least part of the first drain region is provided on the isolation region; an angle between the second surface and a surface of the isolation region is 80 degrees or less; and in a cross-sectional view along a gate length direction, the second surface is in a concave shape.