Patent ID: 6579765
Filing Date: 2003-06-17
Classification: H01L

Abstract:
A method of fabricating a metal oxide semiconductor field effect transistor (MOSFET) device, the method comprising the steps of:a) defining a MOSFET region on a surface of a semiconductor substrate; b) removing a central area of the MOSFET down to a predefined depth to form a recess having a planar base lying in a plane; c) providing an active channel of the MOSFET device wholly beneath said planar base of the recess; and d) on each side of the recess, providing a planar lightly doped region lying wholly beneath the plane in which said planar base lies, the lightly doped region extending underneath the recess, a planar heavily doped region directly above said lightly doped region, and a planar silicide region directly above said heavily doped region.