US 12,279,503 B2
Display device and method of manufacturing display device
Yasushi Asaoka, Sakai (JP); and Sentaro Kida, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/622,131
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Aug. 5, 2019, PCT No. PCT/JP2019/030638
§ 371(c)(1), (2) Date Dec. 22, 2021,
PCT Pub. No. WO2021/024337, PCT Pub. Date Feb. 11, 2021.
Prior Publication US 2022/0352262 A1, Nov. 3, 2022
Int. Cl. H01L 27/32 (2006.01); H01L 51/52 (2006.01); H01L 51/56 (2006.01); H10K 50/14 (2023.01); H10K 50/84 (2023.01); H10K 59/35 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01); H10K 71/50 (2023.01); H10K 71/60 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/353 (2023.02) [H10K 50/14 (2023.02); H10K 50/841 (2023.02); H10K 59/871 (2023.02); H10K 71/00 (2023.02); H10K 71/50 (2023.02); H10K 71/60 (2023.02); H10K 2102/331 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display device comprising:
a plurality of subpixels;
light-emitting elements, one for each of the plurality of subpixels;
first electrodes, one for each of the plurality of subpixels;
a second electrode common to the plurality of subpixels;
subpixel-specific layers, one for each of the plurality of subpixels, between the first electrodes and the second electrode; and
a nanoparticle layer between the first electrodes and the second electrode, the nanoparticle layer being common to the plurality of subpixels and including a stack of nanoparticles, wherein
the nanoparticles have an average density that is higher in locations that overlap the subpixel-specific layers than in locations that overlap gaps between adjacent pairs of the subpixel-specific layers in the nanoparticle layer, and
in each of the light-emitting elements, the nanoparticle layer is provided on a corresponding subpixel-specific layer.