Patent ID: 9716187
Date: 2017-07-25
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a region of semiconductor material having a first conductivity type and a major surface; a termination trench extending from a first portion of the major surface into the region of semiconductor material, wherein at least a portion of the termination trench extends to a first depth, and wherein the termination trench has a first width; an active trench extending from a second portion of the major surface into the region of semiconductor material to a second depth, wherein the active trench has a second width less than the first width, and wherein the first depth is greater than the second depth, and wherein a portion of the region of semiconductor material is laterally interposed between the active trench and the termination trench in a cross-sectional view, and wherein the portion of the region of semiconductor material is devoid of trench structures whereby the active trench is a closest trench structure to the termination trench in the cross-sectional view; a first conductive material having a first portion within the active trench and separated from the region of semiconductor material by a first dielectric region and a second portion within the termination trench separated from the region of semiconductor material by a second dielectric region; a second conductive material adjoining a third portion of the major surface, wherein the second conductive material is configured to provide a Schottky barrier; and a conductive layer electrically coupling the second conductive material to the first portion and the second portion of the first conductive material.