Patent ID: 9231078
Filing Date: 2016-01-05
CPC Classification: H01L

Claim Text:
1. A semiconductor element, comprising: a base; an epitaxy layer, formed by implanting a first doping dopants and disposed on the base; a first well, disposed in the epitaxy layer; a second well, disposed in the epitaxy layer; a third well, formed by implanting a second doping dopants and disposed in the epitaxy layer, and located between the first well and the second well; a first heavily doping region, located in the first well; a second heavily doping region, located in the second well, wherein a surface channel is formed between the first heavily doping region and the second heavily doping region; an implanting region, wherein the implanting region is formed by implanting a third doping dopants, fully disposed between the surface channel and the base, and disposed in part of the first well, part of the second well and part of the third well; the first well, the second well and the third well are located at a middle part of the epitaxy layer; and a conductive layer, disposed above the surface channel; wherein the doping type of the third dopants of the implanting region is complementary to that of the first dopants of the epitaxy layer and that of the second doping dopants of the third well, the bottom of the implanting region is above the bottom of the first well, the bottom of the second well and the bottom of the third well.