Patent ID: 7465633
Filing Date: 2008-12-16
Classification: H01L

Abstract:
1. A method of forming a field effect transistor, comprising: forming a first semiconductor wafer having a channel region protrusion extending therefrom that is surrounded by an electrical isolation region, said channel region protrusion having a first width; removing a portion of a backside of the first semiconductor wafer to define a semiconductor layer having a second width greater than the first width, said semiconductor layer having a primary surface extending opposite the channel region protrusion and the electrical isolation region; forming a gate electrode extending opposite the channel region protrusion, on the primary surface; and forming source and drain regions of a first conductivity type in the semiconductor layer, on opposite sides of the gate electrode, said source and drain regions defining a channel region therebetween that forms a non-rectifying junction with the channel region protrusion, which has a greater volume than the channel region.