A single-side light-emitting source, a method for manufacturing the same, and a display device are provided. The single-side light-emitting source includes a base substrate; a plurality of light-shielding patterns on the base substrate; a signal transmission pattern covering the plurality of light-shielding patterns; a plurality of first electrodes; an electroluminescent layer on the first electrodes; and a transparent second electrode layer on the electroluminescent layer. In the above single-side light-emitting source, the first electrodes are on the signal transmission pattern, and an orthographic projection of each first electrode onto the base substrate is within an orthographic projection of a corresponding light-shielding pattern onto the base substrate.