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:
Mar. 21, 2023
Filed:
Feb. 18, 2015
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, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); H01L 51/50 (2006.01); C07D 471/08 (2006.01); C09K 11/06 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 471/08 (2013.01); C09K 11/06 (2013.01); H01L 51/006 (2013.01); H01L 51/0054 (2013.01); H01L 51/0067 (2013.01); H01L 51/5012 (2013.01); H01L 51/5028 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1029 (2013.01); H01L 51/0003 (2013.01); H01L 51/0004 (2013.01); H01L 51/0008 (2013.01); H01L 51/0013 (2013.01); H01L 51/0056 (2013.01); H01L 51/0058 (2013.01); H01L 51/0059 (2013.01); H01L 51/0077 (2013.01); H01L 51/5004 (2013.01); H01L 51/5016 (2013.01); H01L 51/5206 (2013.01); H01L 51/5221 (2013.01); H01L 51/56 (2013.01); H01L 2251/5376 (2013.01); H01L 2251/55 (2013.01); H01L 2251/552 (2013.01);
Abstract
The present invention relates to organic electroluminescent devices, the emitting layer thereof containing a blend of a luminescent material having a narrow singlet-triplet gap and a fluorescent emission material having high steric shielding.