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:
Apr. 17, 2018
Filed:
Oct. 07, 2014
Universal Display Corporation, Ewing, NJ (US);
Chuanjun Xia, Lawrenceville, NJ (US);
Walter Yeager, Yardley, PA (US);
David Zenan Li, Princeton, NJ (US);
James Fiordeliso, Yardley, PA (US);
Bin Ma, Plainsboro, NJ (US);
Zeinab Elshenawy, Holland, PA (US);
Suman Layek, Lawrenceville, NJ (US);
Ed Barron, Hamilton, NJ (US);
Gregg Kottas, Ewing, NJ (US);
Jason Brooks, Philadelphia, PA (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
Novel phosphorescent tetradentate platinum (II) compounds comprising a twisted aryl group are provided. Also provided are novel phosphorescent tetradentate platinum (II) compounds comprising an imidazo[1,2-f]phenanthridine moiety. The compounds may be used in organic light emitting devices to provide improved device efficiency, line shape and lifetime.