Patent ID: 9024357
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A HEMT transistor, comprising: a heterojunction including a first epitaxial layer and a barrier epitaxial layer; a source structure and a drain structure lying on said barrier epitaxial layer; first and second insulating portions respectively covering the source and drain structures; first and second spacers on said barrier epitaxial layer and between the first and second insulating portions; a dielectric layer at least partially on said first and second insulating portions and said first and second spacers; and a gate metal structure positioned in a contact gate portion between said first and second spacers and at least partially on said first and second insulating portions, said first and second spacers, and the dielectric layer, the dielectric layer being positioned between the spacers and the gate metal structure, said gate metal structure having a shaped profile, and being configured to act as a field plate of said HEMT transistor, wherein said first epitaxial layer comprises an n-type epitaxial layer and a p-type epitaxial layer, said n-type epitaxial layer being in contact with said barrier epitaxial layer.