Patent ID: 10090363

Abstract:
To provide a novel light-emitting device, a light-emitting device that emits light of a plurality of colors includes a first light-emitting element and a second light-emitting element. The first light-emitting element includes a first lower electrode, a first light-emitting layer over the first lower electrode, a second light-emitting layer over the first light-emitting layer, and an upper electrode over the second light-emitting layer. The second light-emitting element includes a second lower electrode, the first light-emitting layer over the second lower electrode, the second light-emitting layer over the first light-emitting layer, and the upper electrode over the second light-emitting layer. An emission spectrum of the first light-emitting layer peaks at a longer wavelength than an emission spectrum of the second light-emitting layer. A distance between the first lower electrode and the first light-emitting layer is shorter than a distance between the second lower electrode and the first light-emitting layer.