Patent ID: 8450794
Filing Date: 2013-05-28
Classification: H01L

Abstract:
1. A semiconductor device formed on a semiconductor substrate, comprising: an epitaxial layer overlaying the semiconductor substrate; a drain formed on back of the semiconductor substrate; a drain region that extends into the epitaxial layer; and a body disposed in the epitaxial layer, having a body top surface and a body bottom surface; a source embedded in the body, extending from the body top surface into the body; a first gate trench extending into the epitaxial layer; a first gate disposed in the first gate trench; an active region contact trench extending through the source and at least part of the body into the drain region; an active region contact electrode disposed within the active region contact trench; a second gate trench extending into the epitaxial layer; a second gate disposed in the second gate trench; a gate contact trench formed within the second gate; and a gate contact electrode disposed within the gate contact trench.