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:
May. 11, 2021
Filed:
Feb. 06, 2018
Osram Opto Semiconductors Gmbh, Regensburg, DE;
Farhang Ghasemi Afshar, Wenzenbach, DE;
Ralph Wirth, Lappersdorf, DE;
OSRAM OLED GMBH, Regensburg, DE;
Abstract
An LED unit comprises a substrate and a first LED chip. The first LED chip may include a first light-emitting surface arranged on the substrate in such a way that light emitted from the first LED chip radiates in a direction of radiation of the LED unit. The LED unit includes a second LED chip comprising a second light-emitting surface and arranged above the first LED chip in such a way that the second LED chip at least partially covers the first LED chip and radiates light emitted from the second LED chip in the direction of radiation of the LED unit. The LED unit comprises a first conversion layer at least partially covering the first light-emitting surface and/or at least partially laterally surrounding the first LED chip. A second conversion layer at least partially covers the second LED chip.