US 12,310,168 B2
Display device
Manabu Niboshi, Sakai (JP); Tokiyoshi Umeda, Sakai (JP); and Yuto Tsukamoto, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/794,201
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Feb. 7, 2020, PCT No. PCT/JP2020/004867
§ 371(c)(1), (2) Date Jul. 20, 2022,
PCT Pub. No. WO2021/157063, PCT Pub. Date Aug. 12, 2021.
Prior Publication US 2023/0057758 A1, Feb. 23, 2023
Int. Cl. H01L 51/50 (2006.01); H01L 27/32 (2006.01); H01L 51/52 (2006.01); H10K 50/125 (2023.01); H10K 50/818 (2023.01); H10K 50/84 (2023.01); H10K 50/856 (2023.01); H10K 59/12 (2023.01); H10K 59/80 (2023.01); H10K 102/10 (2023.01)
CPC H10K 50/818 (2023.02) [H10K 50/125 (2023.02); H10K 50/841 (2023.02); H10K 50/856 (2023.02); H10K 59/12 (2023.02); H10K 59/878 (2023.02); H10K 59/80518 (2023.02); H10K 2102/103 (2023.02)] 11 Claims
OG exemplary drawing
 
1. A display device, comprising:
a thin-film transistor layer including a plurality of thin-film transistors;
a light-emitting element layer including a plurality of light-emitting elements, each emitting light in a different color; and
a sealing layer that covers the light-emitting element layer,
wherein each of the plurality of light-emitting elements includes: a first electrode; a functional layer including a light-emitting layer; and a second electrode, all of which are provided on the thin-film transistor layer in a stated order from the thin-film transistor layer,
the first electrode included each of the plurality of light-emitting elements includes a plurality of reflective layers, each including a reflective metal film and a transparent electrode film stacked on the reflective metal film,
the plurality of the reflective layers is stacked, such that the reflective metal film and the transparent electrode film are alternately arranged in a stated order from the thin-film transistor layer,
the plurality of light-emitting elements includes: a blue light-emitting element configured to emit light in blue; a red light-emitting element configured to emit light in red; and a green light-emitting element configured to emit light in green,
the blue light-emitting element includes one of the plurality of reflective layers,
the red light-emitting element includes two of the plurality of reflective layers, and
the green light-emitting element includes three of the plurality of reflective layers.