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:
Mar. 11, 2025
Filed:
Jan. 26, 2021
Oledworks Llc, Rochester, NY (US);
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
John Hamer, Rochester, NY (US);
Marina Kondakova, Kendall, NY (US);
Jeffrey Spindler, Ontario, NY (US);
Bernd Richter, Dresden, DE;
Philipp Wartenberg, Dresden, DE;
Gerd Bunk, Dresden, DE;
Uwe Vogel, Dresden, DE;
OLEDWorks LLC, Rochester, NY (US);
Fraunhofer-Gesellschaft e.V., Munich, DE;
Abstract
A microdisplay comprising a light emitting OLED stack on top of a silicon-based backplane with individually addressable pixels and control circuitry wherein the light emitting OLED stack has three or more OLED units between a top electrode and a bottom electrode; and the control circuitry of the silicon-based backplane comprises at least two transistors with their channels connected in series between an external power source VDD, and the bottom electrode of the OLED stack. The light-emitting OLED stack preferably has a Vth of at least 7.5V or more. The control circuit can include a protection circuit comprised of a p-n diode, preferably a bipolar junction transistor.