US 12,082,430 B2
Light-emitting device, method for manufacturing light-emitting device, and apparatus for manufacturing light-emitting device
Hiroki Imabayashi, Sakai (JP); Masayuki Kanehiro, Sakai (JP); Hisayuki Utsumi, Sakai (JP); Shota Okamoto, Sakai (JP); Youhei Nakanishi, Sakai (JP); Tatsuya Ryohwa, Sakai (JP); and Kanako Nakata, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Osaka (JP)
Appl. No. 17/258,336
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Jul. 24, 2018, PCT No. PCT/JP2018/027721
§ 371(c)(1), (2) Date Jan. 6, 2021,
PCT Pub. No. WO2020/021636, PCT Pub. Date Jan. 30, 2020.
Prior Publication US 2021/0273189 A1, Sep. 2, 2021
Int. Cl. H01L 51/50 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); C09K 11/02 (2006.01); H01L 51/00 (2006.01); H01L 51/56 (2006.01); H10K 50/115 (2023.01); H10K 71/00 (2023.01); H10K 71/12 (2023.01)
CPC H10K 50/115 (2023.02) [B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); C09K 11/025 (2013.01); H10K 71/00 (2023.02); H10K 71/12 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting element comprising a first electrode, a second electrode, and a quantum dot layer between the first electrode and the second electrode,
wherein, in the quantum dot layer, a plurality of quantum dots is layered,
each of the plurality of quantum dots comprises a core, a shell covering the core, and a ligand coordinated with a surface of the shell and having defect compensation properties,
the light-emitting element comprises a red light-emitting element comprising a red quantum dot configured to emit red light in the quantum dot layer, a green light-emitting element comprising a green quantum dot configured to emit green light in the quantum dot layer, and a blue light-emitting element comprising a blue quantum dot configured to emit blue light in the quantum dot layer, and
a length of the ligand coordinated with the green quantum dot is less than a length of the ligand coordinated with the red quantum dot and greater than a length of the ligand coordinated with the blue quantum dot.