Patent ID: 9064896
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A method of fabricating a semiconductor device, said method comprising: forming a source region and a drain region in an epitaxial layer grown over a substrate layer; forming a gate shield that extends over said source region and drain region; forming a trench-like feed-through element that is filled with metal and passes through said epitaxial layer and that is in contact with said substrate layer and said source region, wherein an upper portion of said feed-through element is wider than a lower portion of said feed-through element, forming a ledge where said upper portion and said lower portion meet, wherein said gate shield contacts said feed- through element at said ledge; forming a drain contact over said drain region; and forming a first oxide layer over the surface of said metal in said feed-through element and a doped glass layer over said first oxide layer.