US 12,408,514 B2
Display device and method of providing the same
Jiyoon Kim, Seongnam-si (KR); Changhee Lee, Seoul (KR); and Yoolguk Kim, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Mar. 30, 2022, as Appl. No. 17/708,670.
Claims priority of application No. 10-2021-0102214 (KR), filed on Aug. 3, 2021.
Prior Publication US 2023/0044202 A1, Feb. 9, 2023
Int. Cl. H10K 59/122 (2023.01); H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/844 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 2102/00 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A method of providing a display device, the method comprising:
providing a first electrode of a light-emitting element on a base layer;
providing a preliminary protective layer on the first electrode;
providing a pixel-defining layer in which an opening is defined, on the preliminary protective layer, wherein the opening exposes a portion of the preliminary protective layer which overlaps the opening and exposes surfaces of the pixel-defining layer to outside of the pixel-defining layer;
providing an auxiliary electrode on an upper surface of the pixel-defining layer which is furthest from the base layer;
providing a hydrophobic treatment on the pixel-defining layer having each of the auxiliary electrode on the upper surface thereof, on the portion of the preliminary protective layer which overlaps the opening and on the surfaces of the pixel-defining layer exposed by the opening;
providing removal of the portion of the preliminary protective layer at the opening, by water-dissolving the portion of the preliminary protective layer, to provide each of:
an exposed portion of the first electrode which is exposed to outside of the pixel-defining layer at the opening, and
a protective layer between the pixel-defining layer and the first electrode as a remaining portion of the preliminary protective layer;
providing a functional layer of the light-emitting element, on the exposed portion of the first electrode; and
providing a second electrode of the light-emitting element, facing the base layer with the pixel-defining layer, the functional layer and the auxiliary electrode therebetween.