Patent ID: 8592298
Filing Date: 2013-11-26
Classification: H01L

Abstract:
1. A method for fabricating edge termination structures in gallium nitride (GaN) materials, the method comprising: providing a n-type GaN substrate having a first surface and a second surface; forming an n-type GaN epitaxial layer coupled to the first surface of the n-type GaN substrate; forming a growth mask coupled to the n-type GaN epitaxial layer, wherein the growth mask comprises: patterning the growth mask to expose at least a portion of the n-type GaN epitaxial layer; forming at least one p-type GaN epitaxial structure coupled to the at least a portion of the n-type GaN epitaxial layer, the at least one p-type GaN epitaxial structure comprising at least one portion of an edge termination structure; and forming a first metal structure electrically coupled to the second surface of the n-type GaN substrate.