Patent ID: 8785975

Claim:
A semiconductor device comprising: a III-nitride substrate of a first conductivity type; a first III-nitride epitaxial layer of the first conductivity type coupled to the III-nitride substrate; a first III-nitride epitaxial structure coupled to a first portion of a surface of the first III-nitride epitaxial layer, the first III-nitride epitaxial structure having a sidewall; a second III-nitride epitaxial structure of the first conductivity type coupled to the first III-nitride epitaxial structure; a second III-nitride epitaxial layer of the first conductivity type coupled to the sidewall of the second III-nitride epitaxial structure and a second portion of the surface of the first III-nitride epitaxial layer; a third III-nitride epitaxial layer of a second conductivity type coupled to the second III-nitride epitaxial layer; one or more dielectric structures having at least a first surface coupled to a surface of the third III-nitride epitaxial layer; and a first metal structure coupled to the third III-nitride epitaxial layer and a second surface of the one or more dielectric structures opposite the first surface.