Light-emitting element, display module, lighting module, light-emitting device, display device, electronic appliance, and lighting device

A light-emitting device comprising:

• a first light-emitting element, a second light-emitting element, a third light-emitting element and a fourth light-emitting element, each comprising an anode, a plurality of light-emitting layers, a first layer and a cathode,
• wherein the plurality of light-emitting layers each comprises:
• a first light-emitting layer over the anode and between the anode and the first layer, the first light-emitting layer each comprising a fluorescent substance and a host material;
• a second light-emitting layer over the first layer;
• and
• a third light-emitting layer over and in contact with the second light-emitting layer and between the second light-emitting layer and the cathode,
• wherein one of the second light-emitting layer and the third light-emitting layer each comprises:
• a first light-emitting substance which is configured to convert triplet excitation energy into light emission;
• a first organic compound;
• and
• a second organic compound,
• wherein the first organic compound and the second organic compound are configured to form an exciplex, and
• wherein a difference between an energy value of a peak wavelength of an emission spectrum of the exciplex and an energy value of a peak wavelength of a lowest-energy absorption band of the first light-emitting substance is 0.2 eV or less,
• wherein the first light-emitting element and a red color filter overlap each other,
• wherein the second light-emitting element and a green color filter overlap each other,
• wherein the third light-emitting element and a blue color filter overlap each other, and
• wherein the fourth light-emitting element has a region which overlap none of the red color filter, the green color filter or the blue color filter.