| 摘要 |
The present invention relates to a semiconductor device including a substrate layer, a metal-oxide-semiconductor field-effect transistor (MOSFET), a backgate region, an isolation layer and a diode. The MOSFET includes a gate region, a source region and a drain region. The source and drain regions are embedded in the backgate region, which includes a voltage input terminal. The isolation layer is located between the backgate region and the substrate layer and has a doping type opposite that of the backgate region. The diode includes a first terminal connected to the isolation layer and a second terminal coupled to an isolation voltage source.
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