An electroluminescent display device comprising: a substrate; a bank provided on the substrate and defining a first emission area and a second emission area; a first emission layer provided in the first emission area; a second emission layer provided in the second emission area; one electrode provided below the first emission layer; and another electrode provided below the second emission layer, wherein a thickness of a first portion of the one electrode is larger than a thickness of a first portion of the another electrode, wherein the first portion of the one electrode corresponds with the first emission area, and the first portion of the another electrode corresponds with the second emission area, wherein the one electrode includes a first lower layer, a first middle layer provided on the first lower layer, a first upper layer provided on the first middle layer, and a first cover layer provided on the first upper layer and extending to a lateral surface of the first upper layer, a lateral surface of the first middle layer, and a lateral surface of the first lower layer, and wherein the another electrode includes a second lower layer, a second middle layer provided on the second lower layer, a second upper layer provided on the second middle layer, and a second cover layer provided on the second upper layer and extending to a lateral surface of the second upper layer, a lateral surface of the second middle layer, and a lateral surface of the second lower layer, wherein the first cover layer is overlapped with the first emission area, and the second cover layer is not overlapped with the second emission area, wherein the first emission layer is in contact with the first cover layer, and the second emission layer is in contact with the second upper layer, and characterized in that each of the first emission layer and the second emission layer comprises a respective emitting material layer, wherein a thickness of the emitting material layer of the first emission layer is larger than a thickness of the emitting material layer of the second emission layer. a substrate; a bank provided on the substrate and defining a first emission area and a second emission area; a first emission layer provided in the first emission area; a second emission layer provided in the second emission area; one electrode provided below the first emission layer; and another electrode provided below the second emission layer, wherein a thickness of a first portion of the one electrode is larger than a thickness of a first portion of the another electrode, wherein the first portion of the one electrode corresponds with the first emission area, and the first portion of the another electrode corresponds with the second emission area, wherein the one electrode includes a first lower layer, a first middle layer provided on the first lower layer, a first upper layer provided on the first middle layer, and a first cover layer provided on the first upper layer and extending to a lateral surface of the first upper layer, a lateral surface of the first middle layer, and a lateral surface of the first lower layer, and wherein the another electrode includes a second lower layer, a second middle layer provided on the second lower layer, a second upper layer provided on the second middle layer, and a second cover layer provided on the second upper layer and extending to a lateral surface of the second upper layer, a lateral surface of the second middle layer, and a lateral surface of the second lower layer, wherein the first cover layer is overlapped with the first emission area, and the second cover layer is not overlapped with the second emission area, wherein the first emission layer is in contact with the first cover layer, and the second emission layer is in contact with the second upper layer, and characterized in that each of the first emission layer and the second emission layer comprises a respective emitting material layer, wherein a thickness of the emitting material layer of the first emission layer is larger than a thickness of the emitting material layer of the second emission layer.