Patent ID: 6624034
Filing Date: 2003-09-23
Classification: H01L

Abstract:
A method of producing a semiconductor device comprising:forming a gate electrode on a channel region on a surface of a semiconductor region of a semiconductor substrate, the channel region having a depth in said semiconductor substrate; forming first side wall spacers on opposite sides of said gate electrode; forming respective elevated semiconductor layers on respective regions on said surface of said semiconductor substrate, each elevated semiconductor layer being elevated relative to said channel region, each region being adjacent a respective first side wall spacer, source and drain regions having a first conductivity type being subsequently formed at the respective regions; removing said first side wall spacers; and forming a pair of pocket injection regions having a second conductivity type by introducing, into said semiconductor substrate where said first side wall spacers had been present, a dopant impurity producing the second conductivity type, where, said pocket injection regions respectively covering only parts of a neighborhood of respective side surfaces of said channel region where said source and drain regions are to be formed, and forming respective pn junctions only with the parts of the neighborhood of the side surfaces.