Patent ID: 8969912
Filing Date: 2015-03-03
Classification: H01L

Abstract:
1. A vertical III-nitride field effect transistor comprising: a drain comprising a first III-nitride material; a drain contact electrically coupled to the drain; a drift region comprising a second III-nitride material coupled to the drain; a channel region comprising a third III-nitride material coupled to the drain and disposed above the drain along a vertical direction; a gate region at least partially surrounding the channel region, having a first surface coupled to the drift region and a second surface on a side of the gate region opposing the first surface, wherein a physical boundary between the channel region and the drift region does not extend below the first surface of the gate region in the vertical direction; a gate contact electrically coupled to the gate region; a source coupled to the channel region; and a source contact electrically coupled to the source; wherein the channel region is disposed between the drain and the source along the vertical direction such that current flow during operation of the vertical III-nitride field effect transistor is along the vertical direction, and the channel region extends along at least a portion of the second surface of the gate region.