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. 12, 2019
Filed:
Jul. 01, 2015
Novaled Gmbh, Dresden, DE;
Bodo Wallikewitz, Dresden, DE;
Carsten Rothe, Dresden, DE;
Novaled GmbH, Dresden, DE;
Abstract
The present invention relates to a an organic light-emitting diode (OLED) () comprising an emission layer and an electron transport layer stack of at least two electron transport layers (), wherein a first electron transport layer () and a second electron transport layer () comprises at least one matrix compound and in addition, —the first electron transport layer () comprises a first lithium halide or a first lithium organic complex; and —the second electron transport layer () comprises a second lithium halide or a second lithium organic complex, wherein the first lithium organic complex is not the same as the second lithium organic complex; and wherein the first lithium halide is not the same as the second lithium halide.