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.:

US 12398164 B1

Date of Patent:

Aug. 26, 2025

Filed:

Nov. 17, 2021

Organic electroluminescent materials and devices

Applicant:

Universal Display Corporation, Ewing, NJ (US);

Inventor:

Zhiqiang Ji, Chalfont, PA (US);

Assignee:

UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);

Attorney:

DUANE MORRIS LLP

Primary Examiner:

Tae H Yoon

Int. Cl.

CPC ...

C07F 15/00 (2006.01); H01L 51/00 (2006.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01);

U.S. Cl.

CPC ...

C07F 15/0033 (2013.01); C07F 15/0006 (2013.01); C07F 15/002 (2013.01); C07F 15/006 (2013.01); H10K 85/322 (2023.02); H10K 85/342 (2023.02); H10K 85/40 (2023.02); H10K 85/622 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 85/658 (2023.02); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02);

Abstract

A compound including a bidentate ligand Lthat includes a moiety of Formula I, is described. In Formula I, ligand Lis coordinated to a metal M by two bonds, and (i) both bonds are with Formula I, and if the metal M is coordinated by a direct bond to a nitrogen of ring C or ring D, then at least one of ring A, ring B, ring C, and ring D is not a benzene ring; or (ii) one of the two bonds is with Formula I, and the other bond is with Formula II which is attached to one of rings A, B, C, or D. In addition, each of ring A, ring B, ring C, ring D, and, if present, ring E is a 5-membered or 6-membered ring; each R, R, R, R, and Ris a hydrogen or one of a variety of substituents.

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