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:
Sep. 05, 2023
Filed:
Jan. 11, 2022
Universal Display Corporation, Ewing, NJ (US);
Jui-Yi Tsai, Newtown, PA (US);
Alexey Borisovich Dyatkin, Ambler, PA (US);
Zhiqiang Ji, Chalfont, PA (US);
Walter Yeager, Yardley, PA (US);
Pierre-Luc T. Boudreault, Pennington, NJ (US);
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A compound including a first ligand Lof Formula II is disclosed, where F is a 5-membered or 6-membered carbocyclic or heterocyclic ring; each Rand Rindependently represents mono to the maximum possible number of substitutions, or no substitution; Zand Zare each independently C or N and coordinated to a metal M to form a 5-membered chelate ring; G is a fused ring structure comprising five or more fused heterocyclic or carbocyclic rings, of which one or two rings are of Formula III the fused heterocyclic or carbocyclic rings in the fused ring structure G are 5-membered or 6-membered; of which if two or more 5-membered rings are present, at least two of the 5-membered rings are fused to one another; Y can be one of BR', NR′, PR′, O, S, Se, C═O, S═O, SO, CR′R″, SiR′R″, and GeR′R″; the metal M can be coordinated to other ligands; and the ligand Lcan be linked with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand.