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:
Feb. 02, 2016
Filed:
Sep. 04, 2008
Berthold Hahn, Hemau, DE;
Andreas Weimar, Regensburg, DE;
Johannes Baur, Regensburg, DE;
Matthias Sabathil, Regensburg, DE;
Glenn-ives Plaine, Regensburg, DE;
Berthold Hahn, Hemau, DE;
Andreas Weimar, Regensburg, DE;
Johannes Baur, Regensburg, DE;
Matthias Sabathil, Regensburg, DE;
Glenn-Ives Plaine, Regensburg, DE;
OSRAM Opto Semiconductors GmbH, Regensburg, DE;
Abstract
A thin-film LED comprising a barrier layer (), a first mirror layer () succeeding the barrier layer (), a layer stack () succeeding the first mirror layer (), and at least one contact structure () succeeding the layer stack (). The layer stack () has at least one active layer () which emits electromagnetic radiation. The contact structure () is arranged on a radiation exit area () and has a contact area (). The first mirror layer () has, in a region lying opposite the contact area of the contact structure (), a cutout which is larger than the contact area () of the contact structure (). The efficiency of the thin-film LED is increased as a result.