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:
Apr. 07, 1987
Filed:
Feb. 14, 1983
Peter Tihanyi, Palo Alto, CA (US);
Robert S Bauer, Portola, CA (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A passivating layer is deposited on the facet of a light emitting device comprising a thin layer of a reactive material. The thickness of the passivating layer is sufficiently thick to react with an optimum amount of contaminants on the facet but is sufficiently thin so as to be consumed in the gettering process and render the layer electrically nonconductive, if initially conductive in nature. The reactive material may be selected from the group consisting of Al,Si,Ta,V,Sb,Mn,Cr and Ti. Al has been found to be particularly good as a passivating layer with a preferred thickness for the layer being in the range of about 20.ANG. to 75.ANG., depending upon whether the layer is for purposes of surface passivation or interface passivation.