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:
Jan. 29, 2019
Filed:
Mar. 12, 2014
Applicant:
Merck Patent Gmbh, Darmstadt, DE;
Inventors:
Philipp Stoessel, Frankfurt am Main, DE;
Amir Hossain Parham, Frankfurt am Main, DE;
Christof Pflumm, Darmstadt, DE;
Anja Jatsch, Frankfurt am Main, DE;
Joachim Kaiser, Darmstadt, DE;
Assignee:
Merck Patent GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H01L 51/00 (2006.01);
U.S. Cl.
CPC ...
H01L 51/5004 (2013.01); H01L 51/5012 (2013.01); H01L 51/5056 (2013.01); H01L 51/5206 (2013.01); H01L 51/56 (2013.01); H01L 51/006 (2013.01); H01L 51/0056 (2013.01); H01L 51/0067 (2013.01); H01L 51/0071 (2013.01); H01L 51/0072 (2013.01); H01L 2251/552 (2013.01); H01L 2251/558 (2013.01);
Abstract
The present application relates to an organic electroluminescent device (OLED) which has an emitting layer comprising a compound having a small difference between the energies of the Sand Tstates, and in which certain conditions apply to the HOMO and LUMO energy levels of the emitting layer and the layers between the anode and the emitting layer.