Patent · US Active

Organic electroluminescent materials and devices

US11482685B2 · kind B2 · utility

0Cited by

38References

12Claims

0Family size

Assignee

UNIVERSAL DISPLAY CORPORATION · US

Inventors

Chuanjun Xia · Lawrenceville, US
Bert Alleyne · Ewing, US
Raymond Kwong · Plainsboro, US
James Fiordeliso · Yardley, US
Michael S. Weaver · Princeton, US
Nasrin Ansari · Monmouth Junction, US
Alan DeAngelis · Pennington, US
Dinesh Rayabarapu · Overland Park, US
Vadim Adamovich · Yardley, US

Key dates

Filing date	Nov 19, 2020
Grant date	Oct 25, 2022
Priority date	—
Expiry date	Nov 19, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/549
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A compound of: is disclosed. In Formula IV, ring B and ring C are each independently a 5 or 6-membered carbocyclic or heterocyclic ring; A-B represents a bonded pair of carbocyclic or heterocyclic rings coordinated to a metal M via a nitrogen atom in ring A and an sp2 hybridized atom in ring B; A-C represents a bonded pair of carbocyclic or heterocyclic rings; M is a metal having an atomic number greater than 40; L′ is a monoanionic bidentate ligand; m is the oxidation state of the metal M; and n is at least 1.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.