US 11,751,435 B2
Display device and method of manufacturing the display device
Hyunmin Cho, Yongin-si (KR); Taesung Kim, Yongin-si (KR); Yunjong Yeo, Yongin-si (KR); Sanggab Kim, Yongin-si (KR); and Daewon Choi, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Jul. 7, 2021, as Appl. No. 17/369,877.
Claims priority of application No. 10-2020-0166928 (KR), filed on Dec. 2, 2020.
Prior Publication US 2022/0173177 A1, Jun. 2, 2022
Int. Cl. H10K 59/122 (2023.01); H10K 50/813 (2023.01); H10K 50/822 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/813 (2023.02); H10K 50/822 (2023.02); H10K 71/00 (2023.02); H10K 2102/351 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate comprising a display area;
an organic layer on the substrate and having a protrusion protruding in a thickness direction of the substrate and overlapping the display area;
a first electrode on the organic layer and overlapping the display area;
a pixel defining layer covering the protrusion and an edge of the first electrode and having an opening portion overlapping a central portion of the first electrode;
an emission layer on the first electrode and overlapping the opening portion; and
a second electrode on the emission layer,
wherein the pixel defining layer comprises an inorganic material,
a first distance from an upper surface of the substrate to a lower surface of the first electrode is less than a second distance from the upper surface of the substrate to an upper surface of the protrusion, the lower surface of the first electrode facing the upper surface of the substrate,
the substrate further comprises a pad area outside the display area,
the display device further comprises a pad on the substrate and overlapping the pad area,
the organic layer covers an edge of the pad and has a pad opening portion exposing a central portion of the pad, and
a third distance from the upper surface of the substrate to an upper surface of the organic layer in the pad area is less than the first distance.