Patent ID: 11882755
Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  A  G  Y | IPC A  G  H

Claim 0:
1. A display device comprising:
a first substrate;
a second 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 are provided to face each other with the second substrate therebetween,
wherein the first light-emitting element and the light-receiving element are provided between the first substrate and the second substrate,
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 light entering through the light guide plate,
wherein the first light-emitting element comprises a first pixel electrode, a light-emitting layer, and a common electrode,
wherein the light-receiving element comprises a second pixel electrode, an active layer, and the common electrode,
wherein the light-emitting layer and the active layer comprise different organic compounds from each other,
wherein the first pixel electrode and the second pixel electrode are provided over one plane,
wherein the common electrode comprises a portion overlapping with the first pixel electrode with the light-emitting layer therebetween and a portion overlapping with the second pixel electrode with the active layer therebetween,
wherein the first light includes visible light,
wherein the second light includes infrared light, and
wherein the second substrate has a lower refractive index with respect to light in a wavelength range from 800 nm to 1000 nm than the light guide plate.