US 12,317,731 B2
Display device with dummy pixel located in peripheral area
Sho Yanagisawa, Tokyo (JP); Tetsuo Morita, Tokyo (JP); Kenji Harada, Tokyo (JP); Hiroshi Tabatake, Tokyo (JP); and Hideyuki Takahashi, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Nov. 16, 2021, as Appl. No. 17/455,042.
Claims priority of application No. 2020-191068 (JP), filed on Nov. 17, 2020.
Prior Publication US 2022/0157900 A1, May 19, 2022
Int. Cl. H10K 59/88 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01)
CPC H10K 59/88 (2023.02) [H10K 59/122 (2023.02); H10K 59/131 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a base;
a first insulating layer disposed on the base;
a first pixel electrode disposed on the first insulating layer in a pixel located in a display area;
a second pixel electrode disposed on the first insulating layer in a dummy pixel located in a peripheral area on an outer side of the display area;
a second insulating layer disposed on the first insulating layer and comprising an opening overlapping the first pixel electrode;
a first organic layer disposed in the pixel and in contact with the first pixel electrode via the opening;
a second organic layer disposed in the dummy pixel;
a partition wall disposed on the second insulating layer and between the first organic layer and the second organic layer; and
a common electrode covering the first organic layer, the second organic layer and the partition wall,
wherein
an end portion of the first organic layer is in contact with a side surface of the partition wall.