Patent · US Active

Phosphorescent materials

US8519384B2 · kind B2 · utility

18Cited by

22References

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
Jason Brooks · Philadelphia, US
Vadim Adamovich · Yardley, US
Michael S. Weaver · Princeton, US
Nasrin Ansari · Monmouth Junction, US
Alan DeAngelis · Pennington, US
Dinesh Rayabarapu · Overland Park, US

Key dates

Filing date	Sep 3, 2009
Grant date	Aug 27, 2013
Priority date	—
Expiry date	Jun 3, 2030

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.