US 12,464,899 B2
Display panel and manufacturing method thereof
Yongil Kim, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on May 8, 2022, as Appl. No. 17/739,147.
Claims priority of application No. 10-2021-0102662 (KR), filed on Aug. 4, 2021.
Prior Publication US 2023/0045133 A1, Feb. 9, 2023
Int. Cl. H01L 27/32 (2006.01); H10K 50/115 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/115 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 2102/00 (2023.02)] 21 Claims
OG exemplary drawing
 
1. A display panel comprising:
a substrate;
light-emitting electrodes on and above the substrate, the light-emitting electrodes respectively disposed in first, second, and third emission areas;
first intermediate layers on and above the light-emitting electrodes, the first intermediate layers respectively disposed in the first, second, and third emission areas and respectively overlapping the light-emitting electrodes;
a bank layer on and above the first intermediate layers, the bank layer covering an edge of each of the first intermediate layers, the bank layer comprising openings respectively overlapping the first intermediate layers;
a counter electrode disposed on and above the bank layer and covering the light-emitting electrodes;
quantum dot light-emitting layers disposed below the counter electrode and respectively disposed in the first, second, and third emission areas; and
a second intermediate layer between the first intermediate layer in the first emission area and the quantum dot light-emitting layer in the first emission area, wherein
the second intermediate layer is disposed in an opening of the bank layer corresponding to the first emission area, the opening being one of the openings of the bank layer,
wherein a density of the first intermediate layer disposed in the first emission area and a density of the second intermediate layer disposed in the first emission area are different from each other.