Patent ID: 7592214

Claim:
A semiconductor device manufacture method comprising the steps of: (a) forming a first active region of a first conductivity type and a second active region of a second conductivity type in a semiconductor substrate; (b) forming first and second gate electrode structures on said first and second active regions, respectively; (c) epitaxially growing semiconductor epitaxial layers of the first conductivity type on a surface of said semiconductor substrate in said first and second active regions on both sides of, and spaced by a predetermined distance from, said first and second gate electrode structures; (d) executing ion implantation for forming source/drain regions at least in said second active region via said epitaxial layers; (e) masking said second active region, removing portions of said semiconductor epitaxial layers on both sides of, and spaced by a predetermined distance from, said first gate electrode structure, and digging said first active region from a surface thereof to form recesses; and (f) epitaxially growing semiconductor buried regions of the second conductivity type, said semiconductor buried regions burying said recesses and applying stress to a channel under said first gate electrode structure.