Patent ID: 9006787
Filing Date: 2015-04-14
Classification: H01L

Abstract:
1. A semiconductor device comprising: a nitride semiconductor stacked structure comprising a carrier transit layer and a carrier supply layer; a p-type nitride semiconductor layer provided over the nitride semiconductor stacked structure and comprising an active region and an inactive region; an n-type nitride semiconductor layer provided on the inactive region in the p-type nitride semiconductor layer; and a gate electrode provided over the active region in the p-type nitride semiconductor layer; wherein the n-type nitride semiconductor layer is depleted, causing it to have fixed positive charges, and the fixed positive charges in the n-type nitride semiconductor layer cause a conduction band energy level at an interface between the carrier transit layer and the carrier supply layer to be comparable to that in a similar structure which lacks the p-type nitride semiconductor layer and the n-type nitride semiconductor layer.