US 12,302,692 B2
Light-emitting device and electronic apparatus including the same
Hakchoong Lee, Yongin-si (KR); Yoonseok Ka, Yongin-si (KR); Dongchan Kim, Yongin-si (KR); Jiyoung Moon, Yongin-si (KR); Hajin Song, Yongin-si (KR); Jihwan Yoon, Yongin-si (KR); and Jaehoon Hwang, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Apr. 6, 2022, as Appl. No. 17/714,892.
Claims priority of application No. 10-2021-0132692 (KR), filed on Oct. 6, 2021.
Prior Publication US 2023/0140767 A1, May 4, 2023
Int. Cl. H10K 50/17 (2023.01); H10K 50/828 (2023.01); H10K 59/123 (2023.01); H10K 85/60 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/828 (2023.02) [H10K 50/171 (2023.02); H10K 59/123 (2023.02); H10K 85/60 (2023.02); H10K 85/615 (2023.02); H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2102/351 (2023.02)] 19 Claims
OG exemplary drawing
 
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; and
an electron injection layer between the second electrode and the emission layer,
wherein the second electrode comprises:
a first layer comprising a first metal having a work function with an absolute value of 5.2 eV or less and a second metal having an electrical conductivity of 1×107 S/m or more; and
a second layer consisting of the second metal having the electrical conductivity of 1×107 S/m or more, and
wherein,
the first metal and the second metal are different from each other,
a thickness of the first layer is from 1 Å to 30 Å,
a thickness of the second layer is from 10 Å to 110 Å, and
the electron injection layer is different from the first layer and the second layer.