Patent ID: 9368610
Filing Date: 2016-06-14
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a substrate; a first layer comprising aluminum nitride over the substrate; a second layer comprising aluminum gallium nitride over the first layer; a third layer comprising indium gallium nitride over the second layer, the third layer having a first portion and a second portion, the first portion of the third layer being separated from the second portion of the third layer; a first blended region beneath the first portion of the third layer, the first blended region comprising aluminum atoms drawn from the first layer into at least the second layer; a second blended region beneath the second portion of the third layer, the second blended region comprising aluminum atoms drawn from the first layer into at least the second layer; a source contact over the first portion of the third layer; and a drain contact over the second portion of the third layer.