Patent · US Active

Organic light emitting diode with increased radical anion stability and applications thereof

US9570686B2 · kind B2 · utility

1Cited by

1References

3Claims

0Family size

Assignee

Osram OLED GMBH · DE

Inventors

Karsten Heuser · Erlangen, DE
Arvid Hunze · Erlangen, DE
Andreas Kanitz · Edenkoben, DE

Key dates

Filing date	Jul 26, 2005
Grant date	Feb 14, 2017
Priority date	—
Expiry date	Jul 29, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH10K50/11
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

An organic light emitting diode (OLED) having an improved service life and improved transport of negative charge carriers. The organic light emitting diode based on an organic semiconductor material in which the transport of negative charge carriers and the stability with respect to reduction are determined by azahetarylene/Lewis acid complex units. This leads to an improved service life of the emission layer, which firstly increases the service life of the component and avoids readjustment of the brightness during operation. Organic light emitting diodes are disclosed in which the position of the emission zone in the emitter layer and the color of the emission can be specifically influenced by azahetarylene/Lewis acid complex units.

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