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. 16, 2007
Filed:
Feb. 26, 2004
Wilhelm Stein, Liudau, DE;
Michael Fehrer, Bad Abbach, DE;
Johannes Baur, Laaber, DE;
Matthias Winter, Regensburg, DE;
Andreas Ploessl, Regensburg, DE;
Stephan Kaiser, Regensburg, DE;
Berthold Hahn, Hemau, DE;
Franz Eberhard, Regensburg, DE;
Wilhelm Stein, Liudau, DE;
Michael Fehrer, Bad Abbach, DE;
Johannes Baur, Laaber, DE;
Matthias Winter, Regensburg, DE;
Andreas Ploessl, Regensburg, DE;
Stephan Kaiser, Regensburg, DE;
Berthold Hahn, Hemau, DE;
Franz Eberhard, Regensburg, DE;
Osram Opto Semiconductors GmbH, Regensburg, DE;
Abstract
An electrical contact for an optoelectronic device which includes a mirror layer () of a metal or a metal alloy, a protective layer (), which serves for reducing the corrosion of the mirror layer (), a barrier layer (), a coupling layer (), and a solder layer (). A contact of this type is distinguished by high reflectivity, good ohmic contact with respect to the semiconductor, good adhesion on the semiconductor and good adhesion of the layers forming the contact with one another, good thermal stability, high stability with respect to environmental influences, and also solderability and patternability.