An electroluminescent display device comprising: a plurality of pixels arranged in a first direction and a second direction intersecting the first direction; a substrate; a circuit device layer; a first electrode; a second electrode; a bank layer comprising a first bank layer and a second bank layer; first, second, and third sub pixels (sP1, sP2, sP3) provided in each of the plurality of pixels and arranged in the first direction; a first emission layer corresponding to at least two of the first sub pixels arranged in the second direction; a second emission layer corresponding to at least two of the second sub pixels arranged in the second direction; and a third emission layer corresponding to at least two of the third sub pixels arranged in the second direction, wherein the first emission layer, the second emission layer, and the third emission layer are spaced apart from one another and each of the first, second and third emission layers is configured to emit a different color of light, and wherein each one of the first sub pixels and the second sub pixels is formed in a triangle structure and each one of the third sub pixels and the pixels is formed in a parallelogram structure, wherein, the triangle structure of each first sub pixel is opposite to the triangle structure of each second sub pixel, wherein the first emission layer is provided to correspond to the two of first subpixels in the first row and the second row, and the second emission layer is provided to correspond to the two of second subpixels in the second row and the third row, wherein the third emission layer is provided to correspond to the two of third sub pixels in the first row and the second row, wherein the first bank layer is provided along boundaries between adjoining first sub pixels, wherein the second bank layer is provided on the first bank layer, and the second bank layer is not formed along boundaries between two of the first sub pixels which adjoin each other and share the first emission layer, but is formed along boundaries between a different two of the first sub pixels which adjoin each other and do not share the first emission layer, and wherein the thickness of one end comprising a first portion of the first emission layer being in contact with the second bank layer functioning as a spreading prevention wall is larger than the thickness of a second portion of the first emission layer in the first sub pixel. a plurality of pixels arranged in a first direction and a second direction intersecting the first direction; a substrate; a circuit device layer; a first electrode; a second electrode; a bank layer comprising a first bank layer and a second bank layer; first, second, and third sub pixels (sP1, sP2, sP3) provided in each of the plurality of pixels and arranged in the first direction; a first emission layer corresponding to at least two of the first sub pixels arranged in the second direction; a second emission layer corresponding to at least two of the second sub pixels arranged in the second direction; and a third emission layer corresponding to at least two of the third sub pixels arranged in the second direction, wherein the first emission layer, the second emission layer, and the third emission layer are spaced apart from one another and each of the first, second and third emission layers is configured to emit a different color of light, and wherein each one of the first sub pixels and the second sub pixels is formed in a triangle structure and each one of the third sub pixels and the pixels is formed in a parallelogram structure, wherein, the triangle structure of each first sub pixel is opposite to the triangle structure of each second sub pixel, wherein the first emission layer is provided to correspond to the two of first subpixels in the first row and the second row, and the second emission layer is provided to correspond to the two of second subpixels in the second row and the third row, wherein the third emission layer is provided to correspond to the two of third sub pixels in the first row and the second row, wherein the first bank layer is provided along boundaries between adjoining first sub pixels, wherein the second bank layer is provided on the first bank layer, and the second bank layer is not formed along boundaries between two of the first sub pixels which adjoin each other and share the first emission layer, but is formed along boundaries between a different two of the first sub pixels which adjoin each other and do not share the first emission layer, and wherein the thickness of one end comprising a first portion of the first emission layer being in contact with the second bank layer functioning as a spreading prevention wall is larger than the thickness of a second portion of the first emission layer in the first sub pixel.