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:
Jun. 20, 2023
Filed:
Aug. 05, 2021
Universal Display Corporation, Ewing, NJ (US);
Mingjuan Su, Ewing, NJ (US);
Walter Yeager, Ewing, NJ (US);
Alan Deangelis, Ewing, NJ (US);
Bin Ma, Ewing, NJ (US);
Jui-Yi Tsai, Ewing, NJ (US);
Lichang Zeng, Ewing, NJ (US);
Chuanjun Xia, Ewing, NJ (US);
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A compound comprising a ligand L, having a structure of Formula I, is provided. In Formula I, Ato Aare each independently CR or N; at least two adjacent ones of Ato Aare CR and the Rs are joined together to form a six-membered ring fused to ring A or ring C; X is O, S, or Se; each R and Ris independently hydrogen or a substituent; any adjacent substituents are optionally joined or fused into a ring; the ligand Lis coordinated to a metal M; the metal M is bonded to ring A through a M-C bond; the metal M can be coordinated to other ligands; and the ligand Lis optionally linked with other ligands. Formulations, OLEDs, and consumer products containing such compounds are also disclosed.