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:
Aug. 01, 2006
Filed:
Jul. 13, 2005
Aref Chowdhury, Springfield, NJ (US);
Hock Min NG, Westfield, NJ (US);
Richart Elliott Slusher, Lebanon, NJ (US);
Aref Chowdhury, Springfield, NJ (US);
Hock Min Ng, Westfield, NJ (US);
Richart Elliott Slusher, Lebanon, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
An apparatus includes a crystalline substrate, a layer of a first group III-nitride located on a planar surface of the substrate, and a layer of a second group III-nitride located over the layer of the first group III-nitride. The first and second group III-nitrides have different alloy compositions. The layer of second group III-nitride may have a pattern of columnar holes or trenches therein. The apparatus may include a plurality of pyramidal field-emitters that include the second group III-nitride.