Display device, display module, and electronic device

A display device comprising:

• a light-emitting and light-receiving element over a first substrate;
• a first color filter above the light-emitting and light-receiving element;
• and
• a first light-emitting element provided adjacent to the light-emitting and light-receiving element,
• wherein the light-emitting and light-receiving element comprises a light-emitting and light-receiving region configured to emit light of a first color and receive light of a second color,
• wherein the light-emitting and light-receiving element includes at least an EL layer and a photoelectric conversion layer between a pixel electrode and a common electrode,
• wherein the first light-emitting element is configured to emit the light of the second color,
• wherein the first color filter is configured to transmit the light of the first color and block the light of the second color,
• wherein the first color filter comprises an opening over the light-emitting and light-receiving region,
• wherein in a cross-sectional view, a width of the light-emitting and light-receiving region is larger than a width of the opening of the first color filter, and
• wherein in the cross-sectional view, the opening of the first color filter is located outside a first end portion of the light-emitting and light-receiving region.