Patent ID: 6426532
Filing Date: 2002-07-30
Classification: H01L

Abstract:
A semiconductor device, comprising:a semiconductor substrate; device isolation regions provided in the semiconductor substrate; a first conductivity type semiconductor layer provided between the device isolation regions; a gate insulating layer provided on the first conductivity type semiconductor layer; a gate electrode provided on the gate insulating layer; a gate electrode side wall insulating layer provided on side walls of the gate electrode; and second conductivity type semiconductor layers provided adjacent to portions of the gate electrode side wall insulating layer so as to cover a portion of the corresponding device isolation region, the second conductivity type semiconductor layers acting as a source region and/or a drain region, wherein: the gate electrode and the first conductivity type semiconductor layer are electrically connected to each other, and the second conductivity type semiconductor layers are provided above the first conductivity type semiconductor layer and have a thickness which gradually increases from the device isolation region toward the gate electrode.