US 12,484,372 B2
Light-emitting device and electronic apparatus including the same
Namsu Kang, Yongin-si (KR); Heungsu Park, Yongin-si (KR); Wonsuk Han, Yongin-si (KR); Huiju Park, 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 Nov. 18, 2022, as Appl. No. 17/989,910.
Claims priority of application No. 10-2021-0162595 (KR), filed on Nov. 23, 2021.
Prior Publication US 2023/0165029 A1, May 25, 2023
Int. Cl. H10K 50/125 (2023.01); H10K 59/123 (2023.01)
CPC H10K 50/125 (2023.02) [H10K 59/123 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first electrode;
a second electrode; and
an interlayer between the first electrode and the second electrode, wherein
the interlayer comprises:
an emission layer;
a third layer between the emission layer and the second electrode;
a first layer between the third layer and the second electrode; and
a second layer between the first layer and the third layer,
the first layer comprises a first metal-free material and a first metal-containing material,
the second layer comprises a second metal-free material and a second metal-containing material,
the first metal-free material and the second metal-free material are different from each other,
the first metal-free material comprises a phosphine oxide-based compound, a phenanthroline-based compound, or a combination thereof,
the first metal-containing material and the second metal-containing material are different from each other, and
the third layer consists of a third metal-free material.