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. 04, 2014
Filed:
Mar. 14, 2011
Peter Levermore, Lambertville, NJ (US);
Huiqing Pang, Newtown, PA (US);
Lech Michalski, Pennington, NJ (US);
Mike Weaver, Princeton, NJ (US);
Peter Levermore, Lambertville, NJ (US);
Huiqing Pang, Newtown, PA (US);
Lech Michalski, Pennington, NJ (US);
Mike Weaver, Princeton, NJ (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
A method for accelerated life testing of organic devices is provided. The lifetime of each of one or more individual organic emissive devices is measured at a non-heating current density. Based upon the measured lifetimes of the one or more devices, the device lifetime is determined for a selected luminance. An organic emissive panel is also obtained having a second organic stack that consists essentially of the one or more organic layers of the first organic stack. The junction temperature of the organic emissive panel is then determined at a heating current density. Based upon the junction temperature and the device lifetime of the one or more individual organic emissive devices, the expected lifetime of the organic emissive panel is then determined at the heating current density.