US 11,985,893 B2
Organic electroluminescence device and aromatic compound for organic electroluminescence device
Keigo Hoshi, Yokohama (JP)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jul. 20, 2020, as Appl. No. 16/933,819.
Claims priority of application No. 10-2019-0142840 (KR), filed on Nov. 8, 2019.
Prior Publication US 2021/0143342 A1, May 13, 2021
Int. Cl. H01L 51/00 (2006.01); C07D 401/14 (2006.01); C09K 11/06 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01)
CPC H10K 85/6572 (2023.02) [C07D 401/14 (2013.01); C09K 11/06 (2013.01); H10K 85/654 (2023.02); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02)] 17 Claims
 
1. An organic electroluminescence device, comprising:
a first electrode;
a second electrode on the first electrode; and
an emission layer between the first electrode and the second electrode, the emission layer comprising an aromatic compound,
wherein the first electrode and the second electrode each independently comprise a transmissive electrode, a transflective electrode or a reflective electrode, the transmissive electrode comprising at least one selected from indium tin oxide, indium zinc oxide, zinc oxide and indium tin zinc oxide, and the transflective and reflective electrode each independently comprising at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF/Ca, LiF/AI, Mo, Ti, a compound thereof, and a mixture thereof,
wherein the aromatic compound comprises:
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 that is a pyridine group or a pyrimidine group; and
a substituent directly bonded to the benzene ring and is a cyano group, a fluorine, or a C1-C10 alkyl group substituted with a fluorine.