US 12,284,886 B2
Electroluminescence display device including auxiliary electrode
MoonSoo Kim, Paju-si (KR); Sungbai Lee, Paju-si (KR); and Suhyeon Kim, Paju-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Nov. 1, 2021, as Appl. No. 17/516,116.
Claims priority of application No. 10-2020-0146500 (KR), filed on Nov. 5, 2020.
Prior Publication US 2022/0140060 A1, May 5, 2022
Int. Cl. H10K 59/131 (2023.01); H10K 50/814 (2023.01); H10K 50/818 (2023.01); H10K 50/824 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/814 (2023.02); H10K 50/818 (2023.02); H10K 50/824 (2023.02)] 20 Claims
OG exemplary drawing
 
1. The electroluminescence display device, comprising:
a substrate including a pixel area having a light emitting portion and a non-light emitting portion adjacent to the light emitting portion;
a first electrode in the light emitting portion of the pixel area;
an auxiliary electrode in the non-light emitting portion of the pixel area and spaced apart from the first electrode;
a light emitting layer on the first electrode;
a second electrode on the light emitting layer in the pixel area and connected to the light emitting layer; and
an auxiliary power electrode below the first electrode and electrically connected with the auxiliary electrode, the auxiliary power electrode being electrically connected with the second electrode and insulated from the first electrode,
wherein the auxiliary power electrode and the first electrode overlap, and the auxiliary power electrode electrically connects the auxiliary electrode and an auxiliary power line, and
wherein the auxiliary power electrode overlaps with an entire width of the first electrode in a plan view.
 
12. An electroluminescence display device, comprising:
a substrate having a display area and a pad area;
a light emitting element in the display area and having a first electrode, a second electrode, and a light emitting layer interposed between the first electrode and the second electrode;
an auxiliary electrode in the display area and spaced apart from the first electrode;
an auxiliary power electrode below the first electrode, the auxiliary power electrode being electrically connected with the second electrode and insulated from the first electrode; and
a power pad in the pad area and including:
a first common power pad electrically connected with the second electrode; and
a second common power pad electrically connected with the auxiliary electrode,
wherein the second common power pad is electrically connected with the second electrode and the auxiliary electrode through a second wiring line, the second common power pad being configured to be electrically floating,
wherein the auxiliary power electrode electrically connects the second wiring line with the auxiliary electrode, and
wherein the auxiliary power electrode overlaps with an entire width of the first electrode in a plan view.