Patent ID: 8138033

Claim:
A method for manufacturing a semiconductor component, comprising: providing a semiconductor material having a major surface, wherein the semiconductor material includes a first epitaxial layer disposed over a substrate and a second epitaxial layer disposed over a portion of the first epitaxial layer, and wherein the first epitaxial layer is between and contacts the substrate and the second epitaxial layer and the second epitaxial layer has a surface that serves as the major surface of the semiconductor material; forming a plurality of trenches in the semiconductor material, wherein first and second trenches of the plurality of trenches extend from the major surface into the second epitaxial layer, and wherein the first trench has first and second opposing sidewalls and a bottom and the second trench has first and second opposing sidewalls and a bottom; forming a first dielectric material adjacent to the first and second sidewalls and the bottom of the first trench and a second dielectric material adjacent to the first and second sidewalls and the bottom of the second trench, the first and second dielectric materials extending from the major surface to the bottoms of the first and second trenches; forming a first polysilicon plug in the first trench and a second polysilicon plug in the second trench, the first polysilicon plug extending from the major surface to a region adjacent the bottom of the first trench and the second polysilicon plug extending from the major surface to a region adjacent the bottom of the second trench; forming a first doped region laterally adjacent the second trench; forming a Schottky contact to a first portion of the major surface of the second epitaxial layer and adjacent the first trench; and forming an edge termination structure over a second portion of the second epitaxial layer, wherein forming the edge termination structure comprises: forming a dielectric layer from the major surface of the second epitaxial layer, the dielectric layer having first and second opposing surfaces; forming a junction that terminates in a portion of the second epitaxial layer that is under the dielectric layer and adjacent the first opposing surface of the dielectric layer; and forming an electrically conductive material over the second opposing surface of the dielectric layer, the electrically conductive material extending beyond the junction.