US 12,452,969 B2
Display device
Daisuke Kubota, Kanagawa (JP); Ryo Hatsumi, Kanagawa (JP); and Taisuke Kamada, Saitama (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., (JP)
Filed by Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken (JP)
Filed on Sep. 23, 2024, as Appl. No. 18/892,996.
Application 18/892,996 is a continuation of application No. 18/379,287, filed on Oct. 12, 2023, granted, now 12,099,686.
Application 18/379,287 is a continuation of application No. 17/415,828, granted, now 11,789,568, issued on Oct. 17, 2023, previously published as PCT/IB2019/060826, filed on Dec. 16, 2019.
Claims priority of application No. 2018-246706 (JP), filed on Dec. 28, 2018.
Prior Publication US 2025/0013333 A1, Jan. 9, 2025
Int. Cl. G06F 3/042 (2006.01); G02B 6/42 (2006.01); G06F 3/044 (2006.01); H05B 33/14 (2006.01); H10K 39/30 (2023.01); H10K 59/65 (2023.01); G06V 40/13 (2022.01)
CPC H05B 33/14 (2013.01) [G02B 6/4298 (2013.01); G06F 3/042 (2013.01); G06F 3/044 (2013.01); H10K 39/30 (2023.02); H10K 59/65 (2023.02); G06F 2203/04102 (2013.01); G06V 40/1318 (2022.01)] 6 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate;
a light guide plate;
a first light-emitting element;
a second light-emitting element; and
a light-receiving element,
wherein the first substrate and the light guide plate face each other,
wherein the first light-emitting element and the light-receiving element are provided between the first substrate and the light guide plate,
wherein the first light-emitting element is configured to emit first light through the light guide plate,
wherein the second light-emitting element is configured to emit second light to a side surface of the light guide plate,
wherein the light-receiving element is configured to receive the second light and convert the second light into an electric signal,
wherein the first light comprises visible light,
wherein the second light comprises infrared light,
wherein a common layer is shared by the first light-emitting element and the light-receiving element, and
wherein the common layer is configured to transport a hole or an electron.