A light emitting device includes a substrate; a circuit region including a circuit device on the substrate; an insulating layer on the circuit region; a first light emitting region connecting portion, a second light emitting region connecting portion, and a third light emitting region connecting portion, in the insulating layer; and a light emitting portion including a first light emitting region on the first light emitting region connecting portion, a second light emitting region on the second light emitting region connecting portion, and a third light emitting region on the third light emitting region connecting portion, the first light emitting region connecting portion includes first light reflective layers including a first lower light reflective layer, a first intermediate light reflective layer on the first lower light reflective layer, and a first upper light reflective layer on the first intermediate light reflective layer, and at least one first via plug connected to the first light emitting region, the second light emitting region connecting portion includes second light reflective layers including a second lower light reflective layer, and a second upper light reflective layer on the second lower light reflective layer, and at least one second via plug connected to the second light emitting region, and the third light emitting region connecting portion includes a third light reflective layer, and a third via plug connected to the third light emitting region.