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:
Aug. 26, 2014
Filed:
Oct. 24, 2008
Stephen R. Forrest, Ann Arbor, MI (US);
Mark Thompson, Anaheim, CA (US);
Noel Giebink, Ann Arbor, MI (US);
Stephen R. Forrest, Ann Arbor, MI (US);
Mark Thompson, Anaheim, CA (US);
Noel Giebink, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
University of Southern California, Los Angeles, CA (US);
Abstract
Novel combination of materials and device architectures for organic light emitting devices is provided. An organic light emitting device, is provided, having an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer includes a host and a phosphorescent emissive dopant having a peak emissive wavelength less than 500 nm, and a radiative phosphorescent lifetime less than 1 microsecond. Preferably, the phosphorescent emissive dopant includes a ligand having a carbazole group.