Patent ID: 9349830
Filing Date: 2016-05-24
CPC Classification: H01L

Claim Text:
1. A semiconductor element, comprising: a substrate; a first well disposed on the substrate; a first heavily doping region disposed in the first well; at least a second heavily doping region disposed in the first heavily doping region; a gate layer disposed on the first well; a third heavily doping region disposed on the substrate; a fourth heavily doping region disposed in the first well; a second well disposed in the third heavily doping region extending toward the substrate, wherein the second well has the first type doping; and a third well disposed between the substrate and the third heavily doping region, wherein the third well has the first type doping, and the second well is extending into the third well; wherein the first heavily doping region, the third heavily doping region, and the fourth heavily doping regions having a first type doping are separated from one another, and the first well and the second heavily doping region have a second type doping complementary to the first type doping.