Patent ID: 8742467

Claim:
A bidirectional switching device, comprising: a semiconductor multilayer structure formed on a substrate and made of a nitride semiconductor; a first ohmic electrode and a second ohmic electrode formed on the semiconductor multilayer structure to be spaced from each other with an interval therebetween; a first gate electrode formed between the first ohmic electrode and the second ohmic electrode; a second gate electrode formed between the first gate electrode and the second ohmic electrode; a first insulating layer formed on the semiconductor multilayer structure to cover the first gate electrode and the second gate electrode; a first shield electrode formed on the first insulating layer to cover the first gate electrode, and having a potential equal to that of the first ohmic electrode; and a second shield electrode formed on the first insulating layer to cover the second gate electrode, and having a potential equal to that of the second ohmic electrode, wherein an end of the first shield electrode is positioned between the first gate electrode and the second gate electrode, and an end of the second shield electrode is positioned between the second gate electrode and the first gate electrode.