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. 14, 2021
Filed:
Apr. 13, 2018
Universal Display Corporation, Ewing, NJ (US);
Tongxiang (Aaron) Lu, Ewing, NJ (US);
George Fitzgerald, Ewing, NJ (US);
Paul M. Lahti, Ewing, NJ (US);
Morgan C. MacInnis, Ewing, NJ (US);
Daniel W. Silverstein, Ewing, NJ (US);
Peter Wolohan, Ewing, NJ (US);
Diana Drennan, Ewing, NJ (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
The present invention includes novel heterocyclic materials for use as blue phosphorescent materials in OLED devices. The novel materials include two fused 5-membered aromatic or pseudoaromatic rings, which are bonded with 6 membered aromatic rings to serve as chelation ligands for a transition metal. The novel materials were determined computationally to have appropriate triplet energies for use as blue emitters and to possess sufficient chemical stability for use in devices.