Patent ID: 9209250
Filing Date: 2015-12-08
Classification: H01L

Abstract:
1. A high electron mobility transistor (HEMT) comprising: a first semiconductor layer; a second semiconductor layer on the first semiconductor layer, and inducing a two-dimensional electron gas (2DEG) in the first semiconductor layer; an impurity containing layer on the second semiconductor layer and containing p-type impurities; a gate on the impurity containing layer; and a source and a drain separate from the gate and electrically connected to at least one of the first semiconductor layer and the second semiconductor layer, wherein the impurity containing layer comprises a first region corresponding to the gate and a second region at opposite sides of the first region, wherein the first region comprises an impurity region configured to be activated to generate holes and the second region comprises a non-activated impurity region, and wherein a depletion region is formed by the activated impurity region in a region of the 2DEG corresponding to the activated impurity region, and wherein a partial thickness of the non-activated impurity region is removed so that the non-activated impurity region has a thickness smaller than a thickness of the activated impurity region.