US 12,457,865 B2
Display device
JungSun Baek, Paju-si (KR); Seongjoo Lee, Goyang-si (KR); Changhyun Song, Goyang-si (KR); and Seungpyo Hong, Busan (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Aug. 29, 2022, as Appl. No. 17/898,170.
Claims priority of application No. 10-2021-0120205 (KR), filed on Sep. 9, 2021.
Prior Publication US 2023/0077261 A1, Mar. 9, 2023
Int. Cl. H01L 27/32 (2006.01); H10K 50/82 (2023.01); H10K 59/131 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/82 (2023.02); H10K 59/122 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a substrate including a plurality of sub-pixels;
an auxiliary line disposed between the plurality of sub-pixels on the substrate;
an overcoating layer including a base part having an opening that exposes the auxiliary line and a plurality of protrusion parts protruding from the base part;
a first electrode corresponding to each of the plurality of sub-pixels and covering the base part and the plurality of protrusion parts;
a bank on a part of the first electrode;
an organic layer on the first electrode and the bank; and
a second electrode on the organic layer and in contact with the auxiliary line exposed through the opening,
wherein an end portion of the bank overlaps with the opening,
wherein the base part includes:
a first base part; and
a second base part extending from an end portion of the first base part and having a lower height than the first base part, and
wherein a distance between an upper surface of the first base part and an upper surface of the substrate is larger than a distance between an upper surface of the second base part and the upper surface of the substrate.