Patent ID: 6144066
Filing Date: 2000-11-07
Classification: H01L

Abstract:
A semiconductor device for providing a ground connection to a component, the component including a vertical MOS power transistor and logic components, the semiconductor device including:a substrate having a first conductivity type, the substrate corresponding to a drain of the MOS power transistor;a first well having a second conductivity type in an upper surface side of the substrate, the logic components being formed in the first well, the first well further including;a second well having the first conductivity type and a first doping level; anda first region having the first conductivity type and a second doping level greater than the first doping level, the first region being formed within the second well; anda metallization contacting the second well and the first region, the metallization forming an ohmic contact with the first region and a rectifying contact with the second well.