Patent ID: 9190480
Filing Date: 2015-11-17
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor body comprising a first surface, a second surface opposite the first surface, an edge extending between the first and second surfaces, an active device region spaced inward from the edge and comprising at least one active semiconductor device, and an edge termination region between the active device region and the edge; a trench extending from the first surface into the semiconductor body in the edge termination region, the trench comprising sidewalls and an electrode insulated from the surrounding semiconductor body; a first doped region of a first conductivity type extending from the first surface into the semiconductor body in the edge termination region, the first doped region having a planar outer surface disposed along the first surface that adjoins the trench at a corner of one of the trench sidewalls and the first surface and having a side surface extending from the corner along the trench sidewall; a first interconnect contacting the trench electrode; a second interconnect contacting the outer surface and the side surface of the first doped region; and an edge region contact contacting the first and second interconnects and electrically coupling the first doped region to the trench electrode, the edge region contact having a bottom surface that is coplanar with the first surface from an edge of the edge region contact to the corner.