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:
Jan. 06, 2009
Filed:
Oct. 06, 2006
John Adam Edmond, Cary, NC (US);
Brian Thibeault, Santa Barbara, CA (US);
David Beardsley Slater, Jr., Durham, NC (US);
Gerald H. Negley, Carrboro, NC (US);
Van Allen Mieczkowski, Apex, NC (US);
John Adam Edmond, Cary, NC (US);
Brian Thibeault, Santa Barbara, CA (US);
David Beardsley Slater, Jr., Durham, NC (US);
Gerald H. Negley, Carrboro, NC (US);
Van Allen Mieczkowski, Apex, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
A physically robust light emitting diode is disclosed that offers high-reliability in standard packaging and that will withstand high temperature and high humidity conditions. The diode comprises a Group III nitride heterojunction diode with a p-type Group III nitride contact layer, an ohmic contact to the p-type contact layer, and a sputter-deposited silicon nitride composition passivation layer on the ohmic contact. The contact layer, the ohmic contact and the passivation layer are made of materials that transmit light generated in the active heterojunction.