Patent ID: 9437725
Filing Date: 2016-09-06
CPC Classification: H01L

Claim Text:
1. A semiconductor device, comprising: a barrier layer formed on a substrate and made of one of InAlGaN and InAlN; a channel layer formed on the barrier layer and made of one of GaN and InGaN; an electron supplying layer formed on the channel layer and made of one of AlGaN, InAlN, and InAlGaN; and a gate electrode and ohmic electrodes formed on the electron supplying layer, wherein an interface between the barrier layer and the channel layer and an interface between the channel layer and the electron supplying layer have a conduction band energy lower than the Fermi level energy, whereby the conduction band at the channel layer forms an inverted U shape; and wherein the channel layer has a thickness of not less than 20 nm and not more than 100 nm.