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:
Sep. 27, 2022
Filed:
Jun. 29, 2018
Merck Patent Gmbh, Darmstadt, DE;
Katja Scheible, Darmstadt, DE;
Beate Burkhart, Darmstadt, DE;
Nils Koenen, Griesheim, DE;
Lara-Isabel Rodriguez, Darmstadt, DE;
Sebastian Meyer, Frankfurt Am Main, DE;
Rouven Linge, Darmstadt, DE;
Miriam Engel, Darmstadt, DE;
Aaron Lackner, Mannheim, DE;
Holger Heil, Frankfurt Am Main, DE;
MERCK PATENT GMBH, Darmstadt, DE;
Abstract
The present application relates to a blue light-emitting organic electroluminescent device (OLED) having an anode, a cathode, at least one blue light-emitting layer and at least one hole-transport layer, wherein the at least one blue light-emitting layer comprises an elongated bis-indenofluorene derivative as a main component and wherein the at least one hole-transport layer comprises a polymer with non-conjugated units as a main component as well as to a method for producing the organic electroluminescent device.