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. 17, 2025
Filed:
Sep. 16, 2020
Universal Display Corporation, Ewing, NJ (US);
Zhiqiang Ji, Chalfont, PA (US);
Pierre-Luc T. Boudreault, Pennington, NJ (US);
Wei-Chun Shih, Lawrenceville, NJ (US);
Walter Yeager, Yardley, PA (US);
Bert Alleyne, Newtown, PA (US);
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A compound including a first ligand Lof Formula I, is disclosed. In Formula I, ring B is a 5- or 6-membered ring; X, X, and Xare each CRor N; R is a 5- or 6-membered carbocyclic or heterocyclic ring, which can be further fused or substituted; and (1) when ring B is an unfused 6-membered ring, Xand Xare N, and Xis C; and (2) when ring B is a fused 6-membered ring, ring B has the structure of Formula II, In this structure, the wavy line indicates the point of connection to ring A; Qto Qare each C or N; and, when proviso (2) applies, (I) at least one of X, X, and Xis N; or (II) R is two or more fused or unfused 5- or 6-membered carbocyclic or heterocyclic rings, or (III) both.