US 12,268,071 B2
Display device having light-emitting element and light source element irradiating ultraviolet rays
Yuji Tanaka, Sakai (JP)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Appl. No. 18/031,332
Filed by SHARP KABUSHIKI KAISHA, Sakai (JP)
PCT Filed Oct. 14, 2020, PCT No. PCT/JP2020/038706
§ 371(c)(1), (2) Date Apr. 11, 2023,
PCT Pub. No. WO2022/079818, PCT Pub. Date Apr. 21, 2022.
Prior Publication US 2023/0380236 A1, Nov. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 59/32 (2023.01); G09G 3/3225 (2016.01); G09G 3/34 (2006.01); H10K 50/115 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/32 (2023.02) [G09G 3/3225 (2013.01); G09G 3/342 (2013.01); G09G 3/3426 (2013.01); H10K 50/115 (2023.02); H10K 59/38 (2023.02); G09G 2320/0626 (2013.01); G09G 2320/0686 (2013.01); G09G 2360/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a light-emitting element including
a first electrode,
a second electrode, and
an active layer disposed between the first electrode and the second electrode, the active layer including a quantum dot light-emitting layer;
a light source element configured to irradiate the quantum dot light-emitting layer with ultraviolet rays; and
a display panel including a plurality of pixels,
wherein each of the plurality of pixels includes a plurality of subpixels,
each of the plurality of subpixels includes the light-emitting element, and
an ultraviolet intensity of the light source element, when an input gray scale of the plurality of subpixels is a first input gray scale lower than a predetermined gray scale, is larger than an ultraviolet intensity of the light source element when the input gray scale of the plurality of subpixels is a second input gray scale equal to or higher than the predetermined gray scale.