Patent ID: 9331204
Filing Date: 2016-05-03
CPC Classification: H01L

Claim Text:
1. A high voltage transistor, comprising: a semiconductor fin; gate dielectric on first and second sides of the fin; a gate overlying the gate dielectric and a channel region in the fin on the first and second sides; and a source terminal and a drain terminal in the fin on opposing sides of the gate, the transistor having a breakdown voltage of 30 Volts or greater, wherein the source terminal includes a lightly doped region adjacent the channel region and a more heavily doped region, and the drain terminal includes a lightly doped region adjacent the channel region and a more heavily doped region, both the lightly doped regions extending along the fin away from the gate by more than 0.5 microns, where the lightly doped regions have dopant concentration less than that of the more heavily doped region, and wherein the channel region in the fin has a doping concentration in the channel region, and extends from a semiconductor substrate having a doping concentration at an intersection of the fin with the substrate that is greater than that of the channel region.