Patent ID: 9012954
Filing Date: 2015-04-21
Classification: H01L

Abstract:
1. An apparatus comprising: an epitaxial layer of a first conductivity and having first and second opposing sides; a drain in said second side of said epitaxial layer; a source in said first side of said epitaxial layer; a gate dielectric layer on the first side of said epitaxial layer and being adjacent said source; a gate contact layer on said gate dielectric layer; said gate dielectric layer and said gate contact layer defining an opening therethrough; a first well of the second conductivity in the epitaxial layer and being aligned with the opening; an insulating layer in the opening and on said first well; a second well of the second conductivity in the first side of said epitaxial layer, said second well being spaced apart from and having a depth greater than a depth of said first well; a first electrically conductive contact coupled to the gate contact layer, and at least one of the first and second wells; and a second electrically conductive contact coupled to the drain.