Patent ID: 9490357
Filing Date: 2016-11-08
CPC Classification: H01L

Claim Text:
1. A HEMT device comprising: a III-Nitride material substrate, a surface of which follows a plane that is not parallel to the C-plane of the III-Nitride material; an epitaxial layer of III-Nitride material grown on said substrate; a recess etched in said epitaxial layer, the recess having at least one plane wall that is not parallel to the surface of the substrate; said at least one plane wall being parallel to a polar plane of the III-Nitride material; at least one carrier supply layer formed on at least a portion of said at least one plane wall of the recess, such that a 2DEG region is formed along said at least a portion of said at least one plane wall of the recess; a doped source region formed at the surface of said epitaxial layer such that the doped source region is separated from said 2DEG region by a channel region of the epitaxial layer, the source region extending parallel to the surface of the substrate up to said at least one plane wall of the recess; a gate insulating layer formed on the channel region of the epitaxial layer; and a gate contact layer formed on the gate insulating layer.