Patent ID: 7282386

Claim:
A method of forming a Schottky device comprising: forming a first unit cell at a first location of a semiconductor substrate, wherein the first unit cell comprises a Schottky contact, and a structure of a first conductivity type laterally surrounded by and overlying a first region of a second conductivity type, wherein the Schottky contact is a Schottky contact to the first region; forming a termination structure at a second location of the semiconductor substrate comprising a first layer of the second conductivity-type; a second layer of the first conductivity-type overlying and abutting the first layer and abutting the first region, wherein a first interface is formed by the first and second layer and a depth of the first interface relative a plane formed by the Schottky contact is greater than a depth of the structure of the first unit cell at a location furthest from the plane formed by the Schottky contact; a third layer of the second conductivity-type overlying and abutting the second layer, wherein a second interface is formed by the third layer and the second layer; and forming a cathode contact at a third location of the semiconductor substrate; wherein, when viewed from a plan view, the termination structure is between the first unit cell and the cathode terminal contact.