Patent ID: 7402859

Claim:
A field effect semiconductor switch, comprising: a semiconductor layer having a surface; a first and a second semiconductor region in the semiconductor layer, the first and second semiconductor regions being arranged next to one another at the surface of the semiconductor layer, wherein the first semiconductor region is a transistor electrode; an insulating layer between the first semiconductor region and the second semiconductor region; a semiconductor strip on the surface of the semiconductor layer, the semiconductor strip overlapping and adjoining the first semiconductor region and the second semiconductor region; a gate, which overlaps the semiconductor strip at least in the region of the insulating layer; and a gate dielectric, which insulates the gate from the semiconductor strip, the first semiconductor region and the second semiconductor region, the semiconductor strip and the gate being formed, with regard to its lateral extent, such that the semiconductor strip is electrically insulating at a first predetermined gate voltage and is electrically conductive at a second predetermined gate voltage, as a result of which the first and second semiconductor regions are electrically insulated from one another at the first predetermined gate voltage and are electrically conductively connected to one another by the semiconductor strip at the second predetermined gate voltage.