US 12,245,449 B2
Light emitting element, method for manufacturing the same, and display device
Takayoshi Kato, Kanagawa (JP); Naoya Kasahara, Kanagawa (JP); and Shimpei Tsujikawa, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Filed by Sony Group Corporation, Tokyo (JP)
Filed on Jun. 24, 2024, as Appl. No. 18/751,867.
Application 18/751,867 is a continuation of application No. 18/348,815, filed on Jul. 7, 2023, granted, now 12,069,880.
Application 18/348,815 is a continuation of application No. 17/313,294, filed on May 6, 2021, granted, now 11,765,923, issued on Sep. 19, 2023.
Application 17/313,294 is a continuation of application No. 16/397,507, filed on Apr. 29, 2019, granted, now 11,024,823, issued on Jun. 1, 2021.
Application 16/397,507 is a continuation of application No. 15/749,212, granted, now 10,326,096, issued on Jun. 18, 2019, previously published as PCT/JP2016/068842, filed on Jun. 24, 2016.
Claims priority of application No. 2015-157025 (JP), filed on Aug. 7, 2015.
Prior Publication US 2025/0008765 A1, Jan. 2, 2025
Int. Cl. H10K 50/805 (2023.01); H05B 33/24 (2006.01); H10K 50/852 (2023.01); H10K 50/856 (2023.01); H10K 59/124 (2023.01); H10K 59/35 (2023.01)
CPC H10K 50/805 (2023.02) [H05B 33/24 (2013.01); H10K 50/852 (2023.02); H10K 50/856 (2023.02); H10K 59/124 (2023.02); H10K 59/35 (2023.02)] 10 Claims
OG exemplary drawing
 
1. A display device comprising:
a substrate;
a plurality of transistors arranged on the substrate;
a first insulating film disposed over the transistors;
a plurality of light emitting elements including a first light emitting element, a second light emitting element and a third light emitting element on the first insulating film, each of the plurality of light emitting elements including an anode electrode, an organic layer and a cathode electrode;
a second insulating film disposed on the first insulating film and between the first light emitting element and the second light emitting element; and
a depression portion extending through the first insulating film, wherein
the depression portion is overlapped with the second insulating film in a cross-sectional view,
the first insulating film is in contact with the anode electrode of the first light emitting element, the anode electrode of the second light emitting element and the anode electrode of the third light emitting element,
a material of the first insulating film and a material in a fill region defined by the depression portion are different, and
the organic layer of the first light emitting element, the organic layer of the second light emitting element and the organic layer of the third light emitting element are in a common layer.