US 12,170,346 B2
Display device
Makoto Shiomi, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 17/783,811
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Dec. 12, 2019, PCT No. PCT/JP2019/048697
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/117189, PCT Pub. Date Jun. 17, 2021.
Prior Publication US 2023/0024146 A1, Jan. 26, 2023
Int. Cl. H01L 33/50 (2010.01); H01L 27/15 (2006.01); H01L 33/62 (2010.01)
CPC H01L 33/505 (2013.01) [H01L 27/156 (2013.01); H01L 33/62 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a first pixel configured to emit light of a first color;
a second pixel configured to emit light of a second color; and
a third pixel configured to emit light of a third color,
wherein the first pixel includes a first subpixel and a second subpixel each including a quantum dot light-emitting layer, and
a light-emission peak wavelength of the second subpixel is longer than a light-emission peak wavelength of the first subpixel,
wherein a ratio of brightness of the second subpixel to brightness of the first subpixel in a case where a maximum gray scale is input to the first pixel is smaller than a ratio of the brightness of the second subpixel to the brightness of the first subpixel in a case where predetermined gray scale closer to a minimum gray scale than the maximum gray scale is input to the first pixel.