1. An electroluminescent display comprising: a substrate having a plurality of pixel regions, each of the pixel regions including a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region; and a plurality of first color light-emitting layers, a plurality of second color light-emitting layers, and a plurality of third color light-emitting layers disposed on the substrate, each of the first color light-emitting layers being positioned in one of the first sub-pixel regions, and each of the second color light-emitting layers being positioned in two adjacent second sub-pixel regions, wherein an area of the first sub-pixel region is larger than an area of the second sub-pixel region in the single pixel region.