Patent ID: 8648386

Claim:
A semiconductor structure, comprising: a first doped region having a first type conductivity; a second doped region having a second type conductivity opposite to the first type conductivity; a third doped region having the first type conductivity, wherein the first doped region and the third doped region are separated by the second doped region; a resistor coupled between the second doped region and the third doped region, wherein an anode is coupled to the first doped region, a cathode is coupled to the third doped region; a dielectric layer on the second doped region; a dielectric structure comprising a first dielectric portion thicker than the dielectric layer, wherein the first doped region and the second doped region have a substantial vertical PN junction therebetween, the substantial vertical PN junction is wholly under the first dielectric portion; and a field plate structure on the dielectric layer and the first dielectric portion.