Patent ID: 9129889
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A semiconductor device structure comprising: a substrate of a first material type, the substrate having a first major surface and a second major surface; a first semiconductor region of a second material type on the first major surface of the substrate; a first trench extending into the first semiconductor region, the first trench having sidewalls and a bottom surface; a second semiconductor region of a third material type on the first semiconductor region and within the first trench, wherein the second semiconductor region is configured to form a 2DEG region that is semi-polar proximate to the sidewalls of the first trench and polar proximate to the bottom surface of the first trench; a control electrode within the first trench and configured to control at least a horizontal portion of the 2DEG region; a shield conductor layer within the trench and above the control electrode and separated from the control electrode by an insulating layer; and a first current carrying electrode electrically coupled to 2DEG region.