US 12,069,880 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 Jul. 7, 2023, as Appl. No. 18/348,815.
Application 18/348,815 is a continuation of application No. 17/313,294, filed on May 6, 2021, granted, now 11,765,923.
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 2024/0057370 A1, Feb. 15, 2024
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)] 12 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 plurality of transistors;
a plurality of light emitting elements including a first light emitting element, a second light emitting element and a third light emitting element, the plurality of light emitting elements being arranged on the first insulating film; and
a color filter comprising a red region corresponding to the first light emitting element, a green region corresponding to the second light emitting element and a blue region corresponding to the third light emitting element, the color filter being disposed along a light emission direction, wherein
the first, second, and third light emitting elements respectively include a light reflection layer, an anode electrode, a light emitting layer and a light transparent layer, the light emitting layers of the first, second, and third light emitting elements extending throughout the plurality of light emitting elements,
in the first light emitting element, a first distance is a distance between a top surface of the light reflection layer between a bottom surface of the cathode electrode, in the second light emission element, a second distance is a distance between a top surface of the light reflection layer and a bottom surface of the cathode electrode, in the third light emission element, a third distance is a distance between a top surface of the light reflection layer between a bottom surface of the cathode electrode, the first distance, the second distance and the third distance being different from each other, and
a first groove is located between two of the plurality of light emitting elements.