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. 28, 2021
Filed:
Jun. 06, 2019
Osram Gmbh, Munich, DE;
Herbert Kaestle, Traunstein, DE;
OSRAM GMBH, Munich, DE;
Abstract
In an embodiment a passive matrix LED display module includes n>1 first electrical lines connected to a respective first switch, m>1 second electrical lines connected to a respective second switch and at least m·n LED light sources, wherein each of the LED light sources is connected on an anode side to a first line and on a cathode side to a second line, wherein each of the first switches is a push-pull switch having a first terminal for connection to an LED supply voltage, a second terminal for connection to an adjustable discharge potential, a third terminal for receiving a switching signal and a fourth terminal for connection to an associated first line, wherein each of the second switches in a switched state is configured to allow current to flow to a reference potential, and wherein the second terminals of the push-pull switches are connected in common to an output voltage terminal of an adjustable voltage source.