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:
Dec. 30, 2025
Filed:
Mar. 08, 2021
Applicant:
Merck Patent Gmbh, Darmstadt, DE;
Inventors:
Amir Hossain Parham, Darmstadt, DE;
Christian Ehrenreich, Darmstadt, DE;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H10K 50/12 (2023.01); H10K 50/81 (2023.01); H10K 50/82 (2023.01); H10K 71/16 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01);
U.S. Cl.
CPC ...
H10K 85/342 (2023.02); H10K 50/12 (2023.02); H10K 50/81 (2023.02); H10K 50/82 (2023.02); H10K 71/164 (2023.02); H10K 85/6572 (2023.02);
Abstract
The present invention relates to an organic electroluminescent device comprising a mixture comprising an electron-transporting host material and a hole-transporting host material, and to a formulation comprising a mixture of the host materials and to a mixture comprising the host materials. The electron-transporting host material corresponds to a compound of the formula (1) from the class of dibenzofuran or dibenzothiophene derivatives containing a substituted pyridine, pyrimidine or triazine unit and a substituted further dibenzofuran or dibenzothiophene unit.