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:
Dec. 25, 2018
Filed:
Oct. 13, 2015
Osram Oled Gmbh, Regensburg, DE;
Osram Gmbh, Munich, DE;
OSRAM OLED GMBH, Regensburg, DE;
Abstract
An optoelectronic circuit includes at least one first and second light emitting diodes; a switch arrangement connected between the first and second diodes and configured to switch over the first and second diodes between series and parallel circuits depending on a predefined ambient parameter; and a current matching circuit for matching the currents through the first and second diodes in case of parallel connection. The current matching circuit includes a current mirror circuit, including first and second current mirror transistors connected via its collector terminal to the first/second diodes, respectively. The arrangement includes a diode/a switch for connecting the first diode in series with the second diode and is configured to form the series circuit including the first and second diodes while bypassing the current matching circuit so that, in case of series connection, the first transistor is switched in a high-resistance fashion and the second transistor is short-circuited.