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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 12398319 B1

PDFFull Text
Date of Patent:
Aug. 26, 2025

Filed:

Dec. 19, 2023

Tetradentate organic electroluminescent materials and devices

Applicant:

Universal Display Corporation, Ewing, NJ (US);

Inventors:

Zhiqiang Ji, Hillsborough, NJ (US);

Lichang Zeng, Lawrenceville, NJ (US);

Jui-Yi Tsai, Newtown, PA (US);

Chun Lin, Yardley, PA (US);

Chuanjun Xia, Lawrenceville, NJ (US);

Alexey Borisovich Dyatkin, Ambler, PA (US);

Walter Yeager, Yardley, PA (US);

Assignee:

UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);

Attorney:

DUANE MORRIS LLP

Primary Examiner:

Caleb E Henry

Int. Cl.
CPC ...
C09K 11/06 (2006.01); C07F 15/00 (2006.01); C09K 11/02 (2006.01); H10K 50/11 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); C07F 15/0033 (2013.01); C09K 11/025 (2013.01); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/622 (2023.02); H10K 85/654 (2023.02); H10K 85/6576 (2023.02); C09K 2211/1029 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02);
Abstract

New organometallic complexes having bis- or tris-heteroleptic ligands and large aspect ratio in one direction and their use in OLEDs to enhance the efficiency is disclosed. Such compounds can have a structure of Formula III, where rings A, B, C, and D are ring; Land Leach a direct bond or a linking group; nand nare 0 or 1; if nor nis 1, then Lor Lis a direct bond or a linking group, and if nor nis 0, Lor Lis not present; Q, Q, Qand Qare a direct bond or oxygen; ring A is trans to ring D, ring B is trans to ring C in a square-planar coordination configuration; Mis Pt, and the compound comprises at least one Pt-carbene bond.

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