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:
May. 14, 2024
Filed:
Jul. 20, 2020
Samsung Display Co., Ltd., Yongin-si, KR;
Keigo Hoshi, Yokohama, JP;
Samsung Display Co., Ltd., Yongin-si, KR;
Abstract
An organic electroluminescence device of an embodiment includes a first electrode, a second electrode, and an emission layer between the first electrode and the second electrode and containing an aromatic compound, wherein the aromatic compound includes a benzene ring, two unsubstituted carbazole groups directly bonded to the benzene ring, two substituted carbazole groups directly bonded to the benzene ring and each substituted with a nitrogen-containing ring group, and a substituent directly bonded to the benzene ring and selected from a cyano group, a fluorine, or a C1-C10 alkyl group substituted with a fluorine. The organic electroluminescence device may obtain good luminous efficiency and long life (long lifespan) characteristics while emitting blue light.