Patent ID: 8896057
Filing Date: 2014-11-25
Classification: H01L

Abstract:
1. A semiconductor structure, comprising: a substrate having a first conductive type; a deep well having a second conductive type, formed in the substrate and extending down from a surface of the substrate; a first well having the first conductive type, extending down from the surface of the substrate and formed in the deep well; a second well having the second conductive type, extending down from the surface of the substrate and formed in the deep well, and the second well spaced apart from the first well; a gate electrode, formed on the substrate and disposed between the first and second wells; an isolation, extending down from the surface of the substrate and substantially disposed between the gate electrode and the second well; a conductive plug, comprising: a first doping electrode region having the second conductive type, extending down from the surface of the substrate and formed within the first well; and a second doping electrode region having the second conductive type, extending down from the surface of the substrate and formed within the second well; wherein the fingers are disposed between the first doping electrode region and the second doping electrode region.