An electroluminescent device includes a substrate and a plurality of electroluminescent elements disposed on the substrate. Each electroluminescent element includes a first electrode, a second electrode, and a function layer including a luminescent layer and disposed between the first electrode and the second electrode. The electroluminescent elements are grouped into a plurality of groups each including at least one electroluminescent element. Barrier layers are disposed in an island-shaped manner corresponding to regions where the electroluminescent elements are disposed, and each barrier layer prevents water from transferring from the substrate to the electroluminescent element in the corresponding group.