The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2016
Filed:
Jan. 12, 2006
Sei-hyung Ryu, Cary, NC (US);
Anant K. Agarwal, Durham, NC (US);
Allan Ward, Durham, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
An edge termination structure for a silicon carbide semiconductor device includes a plurality of spaced apart concentric floating guard rings in a silicon carbide layer that at least partially surround a silicon carbide-based junction, an insulating layer on the floating guard rings, and a silicon carbide surface charge compensation region between the floating guard rings and adjacent the surface of the silicon carbide layer. A silicon nitride layer is on the silicon carbide layer, and an organic protective layer is on the silicon nitride layer. An oxide layer may be between the silicon nitride layer and the surface of the silicon carbide layer. Methods of forming edge termination structures are also disclosed.