US 12,356,792 B2
Light-emitting device and electronic apparatus including the same
Jongwon Lee, Yongin-si (KR); Namsu Kang, Yongin-si (KR); Minkyung Kim, Yongin-si (KR); Minho Park, Yongin-si (KR); Huiju Park, Yongin-si (KR); Dongkyu Lee, Yongin-si (KR); and Hyunshik Lee, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jun. 9, 2021, as Appl. No. 17/343,549.
Claims priority of application No. 10-2020-0130451 (KR), filed on Oct. 8, 2020.
Prior Publication US 2022/0115619 A1, Apr. 14, 2022
Int. Cl. H01L 51/54 (2006.01); H10K 50/13 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01)
CPC H10K 50/13 (2023.02) [H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 2101/90 (2023.02)] 20 Claims
 
1. A light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode;
an interlayer between the first electrode and the second electrode and comprising an emission layer stack,
wherein the emission layer stack comprises:
a first emission layer comprising a first host and a first dopant; and
a second emission layer comprising a second host, a second dopant, and an electron transport compound,
the first host and the second host are different compounds from each other,
the first emission layer is in contact with the second emission layer, and
the second emission layer is closer to the second electrode than the first emission layer.