Light-emitting device, display device, display module, and electronic device

A display device comprising:

• a first light-emitting device;
• a second light-emitting device;
• and
• a conductive film,
• wherein the first light-emitting device comprises a first electrode, a second electrode, a first unit, and a first layer,
• wherein the second electrode overlaps with the first electrode,
• wherein the second electrode comprises a metal atom,
• wherein the second electrode comprises a carbon atom at a concentration higher than or equal to 5×1019 atoms/cm3 and lower than or equal to 5×1021 atoms/cm3,
• wherein the first unit is sandwiched between the first electrode and the second electrode,
• wherein the first unit comprises a first light-emitting material,
• wherein the first layer is sandwiched between the first unit and the first electrode,
• wherein the second light-emitting device comprises a third electrode, a fourth electrode, a second unit, and a second layer,
• wherein the third electrode is adjacent to the first electrode,
• wherein a first gap is between the third electrode and the first electrode,
• wherein the fourth electrode is adjacent to the second electrode,
• wherein a second gap is between the fourth electrode and the second electrode,
• wherein the second gap overlaps with the first gap,
• wherein the second unit is sandwiched between the third electrode and the fourth electrode,
• wherein the second unit comprises a second light-emitting material,
• wherein the second layer is sandwiched between the second unit and the third electrode,
• wherein a third gap is between the second layer and the first layer,
• wherein the third gap overlaps with the first gap,
• wherein the conductive film overlaps with the second electrode, the fourth electrode, and the first gap, and
• wherein the conductive film is electrically connected to the second electrode and the fourth electrode.