US 12,364,120 B2
Organic electroluminescent display device and manufacturing method thereof
Sang Il Shin, Seoul (KR); and Yong Rak Lee, Seoul (KR)
Assigned to LG Display Co., Ltd., (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Jun. 10, 2022, as Appl. No. 17/837,208.
Claims priority of application No. 10-2021-0082256 (KR), filed on Jun. 24, 2021.
Prior Publication US 2022/0416000 A1, Dec. 29, 2022
Int. Cl. H10K 59/131 (2023.01); H10K 50/824 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/824 (2023.02); H10K 59/80522 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 59/122 (2023.02)] 18 Claims
OG exemplary drawing
 
1. An organic electroluminescent display device comprising:
a substrate comprising a display area with unit pixels disposed therein, and a non-display area disposed around the display area;
a plurality of gate lines and a plurality of data lines disposed on the substrate;
a thin film transistor disposed in the display area;
a planarization layer disposed on the thin film transistor for surface planarization;
a first electrode disposed on the planarization layer on each unit pixel;
a bank layer disposed on the first electrode and defining a light emission region of the unit pixels;
a spacer disposed on the bank layer;
a second electrode corresponding to the first electrode;
an emission layer disposed between the first electrode and the second electrode;
a common voltage supply line disposed in the non-display area and connected to the second electrode;
an auxiliary common voltage supply line disposed in the display area and connected to the common voltage supply line; and
a first auxiliary connection line interconnecting the auxiliary common voltage supply line and the second electrode in the display area, and
wherein the first auxiliary connection line is connected to the second electrode at an upper end of the spacer.