US 12,225,774 B2
Display device and method of manufacturing the same
Pilsoon Hong, Yongin-si (KR); Jungi Kim, Yongin-si (KR); Junho Sim, Yongin-si (KR); Jaehun Lee, Yongin-si (KR); and Yangho Jung, Yongin-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 22, 2021, as Appl. No. 17/353,815.
Claims priority of application No. 10-2020-0168715 (KR), filed on Dec. 4, 2020.
Prior Publication US 2022/0181409 A1, Jun. 9, 2022
Int. Cl. H10K 59/122 (2023.01); H10K 50/844 (2023.01); H10K 50/86 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/844 (2023.02); H10K 50/865 (2023.02); H10K 71/00 (2023.02)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a first electrode disposed on the substrate;
a first pixel-defining layer disposed on the first electrode, the first pixel-defining layer having a first opening exposing at least a portion of the first electrode and comprising a negative photosensitive material and a black pigment; and
a second pixel-defining layer disposed on the first pixel-defining layer and comprising a positive photosensitive material and a black dye, wherein the first pixel-defining layer has an optical density of 1 or more, and
an optical density of the second pixel-defining layer is less than an optical density of the first pixel-defining layer.