Patent ID: 9123799
Filing Date: 2015-09-01
Classification: H01L

Abstract:
1. A method for fabricating a lateral-channel/lateral-drift GaN field-effect transistor (FET), the method comprising: providing a substrate; providing a first GaN layer coupled to the substrate, wherein the first GaN layer has a first conductivity type; forming a second GaN layer coupled to the first GaN layer, wherein the second GaN layer has a second conductivity type; removing a portion of the second GaN layer to expose a portion of the first GaN layer; forming a third GaN layer coupled to the second GaN layer and the exposed portion of the first GaN layer, wherein the third GaN layer has a third conductivity type; removing a portion of the third GaN layer to expose a portion of the second GaN layer; forming a source structure coupled to the third GaN layer, wherein a first portion of the third GaN layer is disposed between the source structure and the second GaN layer; forming a drain structure coupled to the third GaN layer; and forming a gate structure coupled to the third GaN layer, wherein a second portion of the third GaN layer is disposed between the gate structure and the second GaN layer.