A light-emitting device includes a substrate having a circuit thereon, a first electrode electrically coupled to the circuit, a second electrode, a light-emitting layer, and a sealing layer including a planarization layer, wherein the first electrode is arranged between the substrate and the second electrode, the light-emitting layer is arranged between the first electrode and the second electrode and emits light in accordance with a current flowing through the light-emitting layer, the planarization layer is arranged on an opposite side of the second electrode from a side on which the light-emitting layer is arranged, and an outer edge of the planarization layer is located inward of an outer edge of the light-emitting layer in plan view.