Electroluminescent display device

An electroluminescent display device includes: a substrate including a plurality of sub-pixel regions, each sub-pixel region including a light emitting region and a non-light emitting region surrounding the light emitting region, and a cathode contact region located on at least one side between the plurality of sub-pixel regions; a planarization layer disposed over the substrate and configured to overlap at least a portion of each of the light emitting region and the cathode contact region; a light emitting device disposed over the planarization layer and configured to overlap at least a portion of the light emitting region, and including a pixel electrode and a cathode facing the pixel electrode; and a cathode contact electrode formed over the planarization layer and formed to overlap at least a portion of the non-emission region, in which the cathode contact electrode includes one side surface exposed toward the cathode contact region, and the cathode is in contact with the one side surface of the cathode c