Light-emitting device

A light-emitting device comprising:

• a first light-emitting region in which a light emission central wavelength is a first wavelength;
• a second light-emitting region in which a light emission central wavelength is a second wavelength shorter than the first wavelength;
• a cathode disposed in the first light-emitting region and the second light-emitting region;
• an anode facing the cathode in the first light-emitting region and the second light-emitting region;
• a first light-emitting layer disposed between the cathode and the anode, and having a light emission central wavelength being the first wavelength;
• a second light-emitting layer disposed between the anode and the first light-emitting layer at least in the second light-emitting region, the second light-emitting layer having a light emission central wavelength being the second wavelength, and having an electron affinity lower than an electron affinity of the first light-emitting layer;
• and
• a first electron transport layer disposed between the first light-emitting layer and the second light-emitting layer in the second light-emitting region, and having a magnitude of an electron affinity between the electron affinity of the first light-emitting layer and the electron affinity of the second light-emitting layer.