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:
Sep. 10, 2013
Filed:
Apr. 28, 2009
Matthias Sabathil, Regensburg, DE;
Lutz Hoeppel, Alteglofsheim, DE;
Andreas Weimar, Regensburg, DE;
Karl Engl, Niedergebraching, DE;
Johannes Baur, Regensburg, DE;
Matthias Sabathil, Regensburg, DE;
Lutz Hoeppel, Alteglofsheim, DE;
Andreas Weimar, Regensburg, DE;
Karl Engl, Niedergebraching, DE;
Johannes Baur, Regensburg, DE;
OSRAM Opto Semiconductor GmbH, Regensburg, DE;
Abstract
A light-emitting diode chip () with a semiconductor layer sequence () is described, which is contacted electrically by contacts () via a current spreading layer (). The contacts () cover around 1%-8% of the surface of the semiconductor layer sequence (). The contacts () consist for example of separate contact points (), which are arranged at the nodes of a regular grid () with a grid constant of 12 μm. The current spreading layer () contains for example indium-tin oxide, indium-zinc oxide or zinc oxide and has a thickness in the range from 15 nm to 60 nm.