Patent · US Active

Phosphorescent materials

US9076973B2 · kind B2 · utility

6Cited by

33References

20Claims

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	Aug 16, 2013
Grant date	Jul 7, 2015
Priority date	—
Expiry date	Jan 16, 2034

Classification

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

Abstract

Novel organic compounds containing a twisted aryl group are provided. In particular, the compounds provided contain a 2-phenylpyridine ligand having a twisted aryl group on the pyridine portion of the ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants. Devices comprising the compounds containing twisted aryl may demonstrate improved color, efficiency, stability and manufacturing. Additionally, methods are provided for making homoleptic Ir (III) compounds which may contain a twisted aryl.

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