Display device, display module, and electronic device

1. A display device comprising a display portion,

wherein the display portion comprises a first substrate, a second substrate, a light-receiving element, a transistor, and a light-emitting element,

wherein the light-receiving element, the transistor, and the light-emitting element are each positioned between the first substrate and the second substrate,

wherein the light-receiving element is positioned closer to the first substrate than the transistor is,

wherein the light-emitting element is positioned closer to the second substrate than the transistor is,

wherein the light-receiving element comprises a first electrode, a first layer comprising an organic compound over the first electrode, and a second electrode over the first layer,

wherein the light-emitting element comprises a third electrode, a second layer over the third electrode, and a fourth electrode over the second layer,

wherein the second electrode is configured to transmit light,

wherein the fourth electrode is configured to transmit light, and

wherein the transistor is electrically connected to the light-emitting element.

2. The display device according to claim 1 ,

wherein the display portion further comprises an insulating layer,

wherein the insulating layer is positioned between the transistor and the light-receiving element, and

wherein light enters the light-receiving element through the insulating layer.

3. The display device according to claim 2 ,

wherein the display portion further comprises a lens,

wherein the lens is positioned over the insulating layer, and

wherein light transmitted through the lens enters the light-receiving element through the insulating layer.

4. The display device according to claim 1 ,

wherein the display portion further comprises an insulating layer,

wherein the insulating layer is positioned between the transistor and the light-receiving element, and

wherein light emitted from the light-emitting element is extracted to the outside through the insulating layer.

5. The display device according to claim 4 ,

wherein the display portion further comprises a coloring layer and a lens,

wherein the light emitted from the light-emitting element is extracted to the outside through the coloring layer, and

wherein light transmitted through the lens enters the light-receiving element.

6. The display device according to claim 1 ,

further comprising a lens,

wherein light transmitted through the lens enters the light-receiving element.

7. A display module comprising the display device according to claim 1 and a connector or an integrated circuit.

8. An electronic device comprising:

the display module according to claim 7 ; and

at least any one of an antenna, a battery, a housing, a camera, a speaker, a microphone, and an operation button.

9. A display device comprising:

a light-receiving element;

a first insulating layer over the light-receiving element;

a first transistor over the first insulating layer;

a second transistor over the first insulating layer;

a second insulating layer over the first transistor; and

a light-emitting element over the second insulating layer,

wherein the light-receiving element comprises a first electrode, a first layer comprising an organic compound over the first electrode, and a second electrode over the first layer,

wherein the light-emitting element comprises a third electrode, a second layer over the third electrode, and a fourth electrode over the second layer,

wherein the second electrode is configured to transmit light,

wherein the fourth electrode is configured to transmit light,

wherein the first insulating layer comprises a first opening,

wherein the second insulating layer comprises a second opening, and

wherein the first transistor is electrically connected to the light-receiving element through the first opening, and

wherein the second transistor is electrically connected to the light-emitting element through the second opening.

10. The display device according to claim 9 ,

further comprising a lens,

wherein light transmitted through the lens enters the light-receiving element.

11. A display module comprising the display device according to claim 9 and a connector or an integrated circuit.

12. An electronic device comprising:

the display module according to claim 11 ; and

at least any one of an antenna, a battery, a housing, a camera, a speaker, a microphone, and an operation button.

13. A display device comprising:

a first transistor;

a first insulating layer over the first transistor;

a light-receiving element over the first insulating layer;

an adhesive layer over the light-receiving element;

a second insulating layer over the adhesive layer;

a second transistor over the second insulating layer;

a third insulating layer over the second transistor; and

a light-emitting element over the third insulating layer,

wherein the light-receiving element comprises a first electrode, a first layer comprising an organic compound over the first electrode, and a second electrode over the first layer,

wherein the light-emitting element comprises a third electrode, a second layer over the third electrode, and a fourth electrode over the second layer,

wherein the second electrode is configured to transmit light,

wherein the fourth electrode is configured to transmit light,

wherein the first insulating layer comprises a first opening,

wherein the third insulating layer comprises a second opening,

wherein the first transistor is electrically connected to the light-receiving element through the first opening, and

wherein the second transistor is electrically connected to the light-emitting element through the second opening.

14. The display device according to claim 13 ,

further comprising a lens,

wherein light transmitted through the lens enters the light-receiving element.

15. A display module comprising the display device according to claim 13 and a connector or an integrated circuit.

16. An electronic device comprising:

the display module according to claim 15 ; and

at least any one of an antenna, a battery, a housing, a camera, a speaker, a microphone, and an operation button.