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:
May. 11, 2021
Filed:
Apr. 19, 2018
Universal Display Corporation, Ewing, NJ (US);
Jui-Yi Tsai, Newtown, PA (US);
Gregg Kottas, Ewing, NJ (US);
Walter Yeager, Yardley, PA (US);
Zeinab Elshenawy, Holland, PA (US);
Chuanjun Xia, Lawrenceville, NJ (US);
Geza Szigethy, Ewing, NJ (US);
Jason Brooks, Philadelphia, PA (US);
UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US);
Abstract
A compound comprising a ligand Lof Formula I: as well as, devices and formulations containing the compound of Formula 1 are disclosed. In the compounds, having a ligand La of Formula I: wherein Rrepresents mono, or di-substitution, or no substitution; wherein Rrepresents di, tri, or tetra-substitution; wherein R is selected from hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein Rand Rare each independently selected from hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; wherein at least one pair of adjacent Rsubstitutions are joined to form a fused ring; wherein the ligand Lis coordinated to a metal M; and wherein the ligand Lis optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.