US 12,389,743 B2
Light-emitting device and electronic apparatus including the same
Hyomin Ko, Yongin-si (KR); and Bora 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. 22, 2022, as Appl. No. 17/992,063.
Claims priority of application No. 10-2021-0162593 (KR), filed on Nov. 23, 2021; and application No. 10-2022-0149642 (KR), filed on Nov. 10, 2022.
Prior Publication US 2023/0165031 A1, May 25, 2023
Int. Cl. H10K 50/16 (2023.01); H10K 50/125 (2023.01); H10K 50/858 (2023.01); H10K 85/40 (2023.01)
CPC H10K 50/16 (2023.02) [H10K 50/125 (2023.02); H10K 50/858 (2023.02); H10K 85/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a first pixel electrode in a first emission area;
a second pixel electrode in a second emission area;
a third pixel electrode in a third emission area;
a counter electrode facing the first pixel electrode, the second pixel electrode, and the third pixel electrode; and
an interlayer between the first to third pixel electrodes and the counter electrode, wherein
the interlayer comprises:
an emission layer; and
an electron transport region between the emission layer and the counter electrode,
the emission layer comprises:
a first emission layer corresponding to the first emission area and emitting first-color light;
a second emission layer corresponding to the second emission area and emitting second-color light; and
a third emission layer corresponding to the third emission area and emitting third-color light,
the electron transport region comprises an electron transport layer,
the electron transport layer comprises a mixture of a first material, a second material, and a third material,
the first material comprises an electron transport compound,
the second material comprises a metal-containing material,
the third material comprises a low-refractive-index compound, and
the first material, the second material, and the third material are different from each other.