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. 02, 2021
Filed:
Dec. 15, 2015
Novaled Gmbh, Dresden, DE;
Bodo Wallikewitz, Dresden, DE;
Carsten Rothe, Dresden, DE;
Novaled GmbH, Dresden, DE;
Abstract
The present invention relates to an organic light-emitting diode 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, wherein—the matrix compound or compounds of the first electron transport layer is/are different to the matrix compound or compounds of the second electron transport layer; and in addition, —the first electron transport layer comprises a dopant of a lithium halide and/or lithium organic complex; and—the second electron transport layer is free of a dopant.