Display Device, Display Module, and Electronic Device

A display device comprising a display portion, the display portion comprising:

• a light-receiving element comprising a first pixel electrode, an active layer over the first pixel electrode, a first layer over the active layer, and a common electrode over the first layer;
• a first light-emitting element comprising a second pixel electrode, a first light-emitting layer over the second pixel electrode, the first layer over the first light-emitting layer, and the common electrode over the first layer;
• and
• a second light-emitting element comprising a third pixel electrode, a second light-emitting layer over the third pixel electrode, the first layer over the second light-emitting layer, and the common electrode over the first layer,
• wherein the first layer serves as an electron-transport layer in each of the light-receiving element, the first light-emitting element, and the second light-emitting element, and
• wherein the active layer comprises a first organic compound.

A display device comprising a display portion, the display portion comprising:

• a light-receiving element comprising a first pixel electrode, a common electrode, an active layer between the first pixel electrode and the common electrode, and a first layer between the active layer and the common electrode;
• a first light-emitting element comprising a second pixel electrode, the common electrode, a first light-emitting layer between the second pixel electrode and the common electrode, and the first layer between the first light-emitting layer and the common electrode;
• a second light-emitting element comprising a third pixel electrode, the common electrode, a second light-emitting layer between the third pixel electrode and the common electrode, and the first layer between the second light-emitting layer and the common electrode;
• and
• a third light-emitting element comprising a fourth pixel electrode, the common electrode, and the first layer between the fourth pixel electrode and the common electrode,
• wherein the first layer serves as an electron-transport layer in each of the light-receiving element, the first light-emitting element, and the second light-emitting element,
• wherein the first layer serves as a third light-emitting layer in the third light-emitting element, and
• wherein the active layer comprises a first organic compound.

A display device comprising a display portion, the display portion comprising:

• a light-receiving element comprising a first pixel electrode, a first light-emitting layer over the first pixel electrode, an active layer over the first light-emitting layer, and a common electrode over the active layer;
• a first light-emitting element comprising a second pixel electrode, the first light-emitting layer over the second pixel electrode, the active layer over the first light-emitting layer, and the common electrode over the active layer;
• and
• a second light-emitting element comprising a third pixel electrode, a second light-emitting layer over the third pixel electrode, and the common electrode over the second light-emitting layer,
• wherein the active layer comprises a first organic compound.