US 12,302,670 B2
Light-emitting device containing quantum dots and method for manufacturing same
Yoshihiro Ueta, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/781,278
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Dec. 13, 2019, PCT No. PCT/JP2019/048873
§ 371(c)(1), (2) Date May 31, 2022,
PCT Pub. No. WO2021/117210, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2022/0416131 A1, Dec. 29, 2022
Int. Cl. H10H 20/851 (2025.01); H10H 20/01 (2025.01)
CPC H10H 20/8514 (2025.01) [H10H 20/01 (2025.01); H10H 20/0361 (2025.01)] 18 Claims
OG exemplary drawing
 
1. A light-emitting device comprising:
a light-emitting part containing a quantum dot having a core and a shell located outside the core,
wherein each of the core and the shell has a hexagonal structure,
a lattice constant of the core is larger than a lattice constant of the shell,
the core has a plurality of crystal planes different from each other in surface free energy,
the plurality of crystal planes includes a first crystal plane and a second crystal plane having higher surface free energy than the first crystal plane, and
the shell located on the second crystal plane includes a portion thicker than the shell located on the first crystal plane.