Patent ID: 7696535
Filing Date: 2010-04-13
Classification: H01L

Abstract:
1. A gallium-nitride high electron mobility transistor, comprising: a gallium nitride (GaN) buffer layer; an aluminum gallium-nitride (GaAlN) barrier layer formed on the buffer layer; a source electrode placed on the barrier layer; a drain electrode placed on the barrier layer to be spaced apart from the source electrode; a gate electrode placed on a top of the barrier layer to be spaced apart from the source electrode and the drain electrode; a dielectric layer deposited on the top of the barrier layer; an electric field electrode formed on the dielectric layer located on the gate electrode; and at least one inner field-plate formed in the dielectric layer between the gate electrode and the drain electrode to be spaced apart from the gate electrode and the drain electrode, wherein the inner field-plate is electrically separated from the source electrode, the drain electrode, the gate electrode and the electric field electrode.