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:
Sep. 22, 2026
Filed:
Oct. 28, 2022
Oledworks Llc, Rochester, NY (US);
The Penn State Research Foundation, University Park, PA (US);
Noel C. Giebink, State College, PA (US);
Raju Lampande, University Park, PA (US);
John Hamer, Rochester, NY (US);
Jon-Paul S. Desormeaux, Rochester, NY (US);
OLEDWorks LLC, New York, NY (US);
Abstract
An optical upconverter, comprising a photodiode coupled to a stacked organic light emitting diode (OLED), the stacked OLED comprising at least two OLED light-emitting units separated by a charge-generation layer (CGL), wherein photocurrent generated by the photodetector causes light emission from the stacked OLED. The photodiode generates a photocurrent when exposed to an input light of a first frequency band as well as light of a second frequency band which is the same as that emitted by the stacked OLED. This creates an avalanche effect that increases the amount of overall emission. The photodiode can be a layer between the electrodes of the stacked OLEDs. A constant voltage bias that is below the threshold voltage can be applied to the electrodes of the stacked OLED. The photodiode can be an admixture of two materials, preferably organic. The upconverter can be divided into pixel segments as part of a display.