Abstract: A micro LED alignment method includes the steps of: (a) arranging, on a substrate, a first electrode layer and a second electrode layer spaced apart from each other; (b) arranging an insulation layer on the substrate on which the first electrode layer and the second electrode layer are arranged; (c) forming a plurality of grooves at regular intervals in a portion, of the insulation layer, corresponding to the region between the first electrode layer and the second electrode layer; and (d) aligning the plurality of micro LEDs at regular intervals by means of repulsive force generated between one micro LED and another adjacent micro LED through the generation of an electric field in the first electrode layer and the second electrode layer, while supplying, onto the substrate, a solution containing the plurality of micro LEDs, wherein in step (d), one micro LED can be aligned with one groove.