US 12,232,367 B2
Display device including swelling prevention layer
Chun Gi You, Asan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Mar. 16, 2022, as Appl. No. 17/655,117.
Claims priority of application No. 10-2021-0111074 (KR), filed on Aug. 23, 2021.
Prior Publication US 2023/0059622 A1, Feb. 23, 2023
Int. Cl. H10K 59/12 (2023.01); H10K 50/816 (2023.01); H10K 50/84 (2023.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01); H10K 50/818 (2023.01); H10K 50/86 (2023.01); H10K 59/40 (2023.01); H10K 102/10 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 50/816 (2023.02); H10K 50/844 (2023.02); H10K 71/00 (2023.02); H10K 50/818 (2023.02); H10K 50/865 (2023.02); H10K 59/1201 (2023.02); H10K 59/40 (2023.02); H10K 2102/103 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display device, comprising:
a substrate;
a thin-film transistor disposed on the substrate;
a via insulating layer disposed above the thin-film transistor;
a first electrode disposed on the via insulating layer and electrically connected to the thin-film transistor;
a pixel-defining layer disposed on the via insulating layer and on the first electrode, wherein the pixel-defining layer includes an opening that partially exposes an upper surface of the first electrode; and
a first swelling prevention layer disposed on one end of the upper surface of the first electrode but not on a side surface of the first electrode and interposed between the first electrode and the pixel-defining layer,
wherein the pixel-defining layer comprises a first region that overlaps the first swelling prevention layer and the first electrode, and a second region that overlaps the first electrode but not the first swelling prevention layer,
wherein the second region of the pixel-defining layer is in direct contact with the upper surface of the first electrode, and
wherein a part of the upper surface of the first electrode in contact with the pixel-defining layer is made of a material that differs from a material of the first swelling prevention layer.