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:
Oct. 28, 2014
Filed:
Feb. 15, 2011
Markus Maute, Alteglofsheim, DE;
Karl Engl, Pentling, DE;
Stefanie Rammelsberger, Zeitlarn, DE;
Nikolaus Gmeinwieser, Obertraubling, DE;
Johann Eibl, Wald, DE;
Markus Maute, Alteglofsheim, DE;
Karl Engl, Pentling, DE;
Stefanie Rammelsberger, Zeitlarn, DE;
Nikolaus Gmeinwieser, Obertraubling, DE;
Johann Eibl, Wald, DE;
Abstract
A light emitting diode chip includes a semiconductor layer sequence, the semiconductor layer sequence having an active layer that generates electromagnetic radiation, wherein the light emitting diode chip has a radiation exit area at a front side. At a rear side lying opposite the radiation exit area, the light emitting diode chip has, at least in regions, a mirror layer containing silver. A functional layer that reduces corrosion and/or improves adhesion of the mirror layer is arranged on the mirror layer, wherein a material from which the functional layer is formed is also distributed in the entire mirror layer. The material of the functional layer has a concentration gradient in the mirror layer, wherein the concentration of the material of the functional layer in the mirror layer decreases proceeding from the functional layer in the direction toward the semiconductor layer sequence.