Patent ID: 8901608
Filing Date: 2014-12-02
Classification: H01L

Abstract:
1. A high electron mobility transistor comprising: a source electrode and a drain electrode spaced apart from each other on a substrate; a T-type gate electrode disposed on the substrate between the source electrode and the drain electrode; and a plurality of insulating layers disposed between the substrate and the T-type gate electrode, wherein the plurality of insulating layers includes a first insulating layer, a second insulating layer, and a third insulating layer; wherein the third insulating layer is disposed between the substrate and a head portion of the T-type gate electrode such that a first portion of the third insulating layer is in contact with a foot portion of the T-type gate electrode; wherein the second insulating layer is disposed between the substrate and the head portion of the T-type gate electrode such that the second insulating layer is in contact with the third insulating layer; and wherein the first insulating layer and a second portion of the third insulating layer are sequentially stacked between the substrate and the head portion of the T-type gate electrode so as to be in contact with the second insulating layer.