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:
Feb. 14, 2017
Filed:
Jul. 26, 2005
Karsten Heuser, Erlangen, DE;
Arvid Hunze, Erlangen, DE;
Andreas Kanitz, Höchstadt, DE;
OSRAM OLED GmbH, Regensburg, DE;
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.