US 11,744,100 B2
Light-emitting device and apparatus including same
Dongchan Kim, Yongin-si (KR); Jiyoung Moon, Yongin-si (KR); Heechang Yoon, Yongin-si (KR); Jihye Lee, Yongin-si (KR); Hakchoong Lee, Yongin-si (KR); Haemyeong Lee, Yongin-si (KR); Myungsuk Han, Yongin-si (KR); Jihwan Yoon, Yongin-si (KR); Jonghyuk Lee, Yongin-si (KR); and Yoonhyeung Cho, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., LTD., Yongin-si (KR)
Filed on Apr. 9, 2021, as Appl. No. 17/226,231.
Claims priority of application No. 10-2020-0043603 (KR), filed on Apr. 9, 2020; and application No. 10-2021-0012657 (KR), filed on Jan. 28, 2021.
Prior Publication US 2021/0320274 A1, Oct. 14, 2021
Int. Cl. H10K 50/17 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01)
CPC H10K 50/171 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 59/12 (2023.02); H10K 59/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first electrode;
a second electrode facing the first electrode; and
an organic layer between the first electrode and the second electrode,
wherein the organic layer includes m emission units and (m−1) charge generating units, each of the charge generating units being between the emission units that are adjacent to each other,
m is a natural number of 2 or greater,
at least one of the (m−1) charge generating units includes an n-type charge generating layer, a p-type charge generating layer, and a p-type hole injection layer,
wherein the n-type charge generating layer includes an n-type organic compound and a metal material, and
wherein the p-type charge generating layer and the p-type hole injection layer each independently include an inorganic semiconductor material.