US 12,490,631 B2
Light emitting display device
SangHoon Lee, Paju-si (KR); HanSol Choi, Paju-si (KR); and Joonsuk Lee, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 21, 2022, as Appl. No. 17/991,439.
Claims priority of application No. 10-2021-0189823 (KR), filed on Dec. 28, 2021; and application No. 10-2022-0069406 (KR), filed on Jun. 8, 2022.
Prior Publication US 2023/0207734 A1, Jun. 29, 2023
Int. Cl. H10K 59/131 (2023.01); H10H 20/857 (2025.01); H10H 29/49 (2025.01); H10K 59/122 (2023.01); H10K 59/124 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/80522 (2023.02) [H10H 20/857 (2025.01); H10K 59/122 (2023.02); H10K 59/124 (2023.02); H10K 59/1315 (2023.02); H10H 29/49 (2025.01)] 21 Claims
OG exemplary drawing
 
1. A light emitting display device comprising:
a substrate;
at least one subpixel on the substrate, the subpixel including a light emitting element;
an auxiliary power electrode disposed on the substrate, the auxiliary power electrode electrically connected to a common electrode of the light emitting element;
a first protective layer on the substrate;
a second protective layer disposed between the first protective layer and the auxiliary power electrode, wherein one or more openings are formed through the first protective layer and the second protective layer to expose a portion of the auxiliary power electrode to form a contact region for connecting the common electrode;
a structure disposed on the exposed portion of the auxiliary power electrode in the contact region; and
a cover pattern disposed in a coverage region in the contact region, wherein the coverage region is located where an upper surface of the second protective layer and a side surface of the first protective layer intersect in the contact region,
wherein the cover pattern is formed to have an inclined surface between the upper surface of the second protective layer and the side surface of the first protective layer, and
wherein the inclined surface include a first end terminating at the side surface of the first protective layer and a second end terminating at the upper surface of the second protective layer.