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. 22, 2020
Filed:
Apr. 10, 2018
Universal Display Corporation, Ewing, NJ (US);
Yonggang Wu, Lawrenceville, NJ (US);
Chuanjun Xia, Lawrenceville, NJ (US);
James Fiordeliso, Morrisville, PA (US);
Suman Layek, Lawrenceville, NJ (US);
Bert Alleyne, Ewing, NJ (US);
Alexey Borisovich Dyatkin, Ambler, PA (US);
Nasrin Ansari, Monmouth Jct., NJ (US);
Scott Beers, Flemington, NJ (US);
Edward Barron, Hamilton, NJ (US);
Jason Brooks, Philadelphia, PA (US);
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
Organometallic compounds comprising an imidazole carbene ligand having a N-containing ring fused to the imidazole ring are provided. In particular, the N-containing ring fused to the imidazole ring may contain one nitrogen atom or more than one nitrogen atom. These compounds may demonstrate high photoluminescent (PL) efficiency, Gaussian emission spectra, and/or short excited state lifetimes. These materials may be especially useful as blue phosphorescent emitters.