Patent ID: 8581300
Filing Date: 2013-11-12
Classification: H01L

Abstract:
1. A compound semiconductor device comprising: a substrate; an electron channel layer and an electron supply layer formed over the substrate; a gate electrode, a source electrode and a drain electrode formed on or above the electron supply layer; a p-type semiconductor layer formed between the electron supply layer and the gate electrode; and an n-type semiconductor layer formed a above the electron supply layer, and at least between the gate electrode and the source electrode, and between the gate electrode and the drain electrode, wherein the p-type semiconductor layer contains, as a p-type impurity, an element same as that being contained in at least either of the electron channel layer and the electron supply layer, and wherein the n-type semiconductor layer contains, as an n-type impurity, an element same as that being contained in at least either of the electron channel layer and the electron supply layer.