US 12,207,520 B2
Display apparatus having light-emitting device
Hong Seok Choi, Seoul (KR); Chun Ki Kim, Seoul (KR); Ahn Ki Kim, Busan (KR); and Kyung Hoon Han, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Dec. 27, 2021, as Appl. No. 17/562,491.
Claims priority of application No. 10-2020-0190027 (KR), filed on Dec. 31, 2020; and application No. 10-2021-0148857 (KR), filed on Nov. 2, 2021.
Prior Publication US 2022/0208860 A1, Jun. 30, 2022
Int. Cl. H01L 27/32 (2006.01); H10K 59/122 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/38 (2023.02) [H10K 59/122 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a second electrode disposed on a first electrode; and
a light-emitting layer disposed between the first electrode and the second electrode and generating light displaying a white color,
wherein the light-emitting layer includes four emission stacks and charge generation layers disposed between the emission stacks,
wherein one of the emission stacks has a stacked structure of a first red emission material layer and a first blue emission material layer, and
wherein at least one of the emission stacks emits light having a different color from the emission stack having a stacked structure of the first red emission material layer and the first blue emission material layer.