Patent ID: 7608868
Filing Date: 2009-10-27
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate having an active region defined by a device isolation film; a gate structure having a first side and a second side, the gate structure comprising a stacked structure of a gate insulating film, a gate electrode and a first CVD insulating film; a first sidewall spacer and a second sidewall spacer respectively disposed on the first side and the second side of the gate structure; an LDD region disposed in a first Si epitaxial layer under the gate insulating film; a second Si epitaxial layer and a buried oxide film disposed under the LDD region and the first Si epitaxial layer, wherein the second Si epitaxial layer is disposed adjacent to the buried oxide film, the buried oxide film filling a recess disposed on a surface of the semiconductor substrate adjacent to the second sidewall spacer; and a source/drain region disposed on the second Si epitaxial layer and the buried oxide film.