US 12,245,452 B2
Display apparatus
Youngran Son, Yongin-si (KR); and Seunglyong Bok, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Dec. 14, 2021, as Appl. No. 17/644,303.
Claims priority of application No. 10-2020-0174726 (KR), filed on Dec. 14, 2020.
Prior Publication US 2022/0190295 A1, Jun. 16, 2022
Int. Cl. H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 59/40 (2023.01); H10K 59/65 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 59/12 (2023.02); H10K 59/40 (2023.02); H10K 59/65 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a substrate having an opening, a display area around the opening, and a middle area between the opening and the display area;
a light-emitting element in the display area, the light-emitting element comprising a pixel electrode, an opposite electrode, and an intermediate layer between the pixel electrode and the opposite electrode; and
a disconnection portion in the middle area, the disconnection portion comprising a first stack structure and a second stack structure on the first stack structure,
wherein a 1-1st sub-layer, a 1-2nd sub-layer, and a 1-3rd sub-layer are sequentially stacked in the first stack structure,
wherein a 2-1st sub-layer, a 2-2nd sub-layer, and a 2-3rd sub-layer are sequentially stacked in the second stack structure,
wherein the intermediate layer and the opposite electrode extend from the display area to the middle area, the intermediate layer and the opposite electrode being disconnected at the disconnection portion,
wherein the first stack structure has a first concave portion in which the 1-2nd sub-layer is dented toward a center of the 1-2nd sub-layer,
wherein the second stack structure has a second concave portion in which the 2-2nd sub-layer is dented toward a center of the 2-2nd sub-layer, and
wherein the intermediate layer and the opposite electrode each have a thickness that decreases toward an inner portion of the first concave portion or an inner portion of the second concave portion.