A light-emitting device, comprising: a first semiconductor layer including an n-type semiconductor layer; a second semiconductor layer including a p-type semiconductor layer; a light-emitting layer between the first and second semiconductor layers; a transparent conductive oxide layer on the second semiconductor layer; an N-electrode pattern layer deposited on the first semiconductor layer; and a P-electrode pattern layer deposited on the transparent conductive oxide layer, characterised in that: the N-electrode pattern layer comprises a pair of first sub-electrode patterns (15a, 15b) mechanically separated from each other and disposed in a mirror relationship, each of the first sub-electrode patterns (15a, 15b) including a first electrode body having an elongated distorted C-shape; and the P-electrode pattern layer comprises a pair of second sub-electrode patterns (16a, b) in a mirror relationship, each of the second sub-electrode patterns (16a, 16b) corresponding to each of the first sub-electrode patterns (15a and 15b) and extending out from an half-enclosed opening of the corresponding first sub-electrode pattern (15a, 15b) along an outline of the corresponding first sub-electrode pattern to surround the corresponding first sub-electrode pattern (15a, 15b), wherein each of the second sub-electrode patterns includes a second electrode body (160a, 160b) and a plurality of second branched electrodes (162a, 162b) formed along the length of the sub-electrode body and extending toward the corresponding first sub-electrode pattern. a first semiconductor layer including an n-type semiconductor layer; a second semiconductor layer including a p-type semiconductor layer; a light-emitting layer between the first and second semiconductor layers; a transparent conductive oxide layer on the second semiconductor layer; an N-electrode pattern layer deposited on the first semiconductor layer; and a P-electrode pattern layer deposited on the transparent conductive oxide layer, characterised in that: the N-electrode pattern layer comprises a pair of first sub-electrode patterns (15a, 15b) mechanically separated from each other and disposed in a mirror relationship, each of the first sub-electrode patterns (15a, 15b) including a first electrode body having an elongated distorted C-shape; and the P-electrode pattern layer comprises a pair of second sub-electrode patterns (16a, b) in a mirror relationship, each of the second sub-electrode patterns (16a, 16b) corresponding to each of the first sub-electrode patterns (15a and 15b) and extending out from an half-enclosed opening of the corresponding first sub-electrode pattern (15a, 15b) along an outline of the corresponding first sub-electrode pattern to surround the corresponding first sub-electrode pattern (15a, 15b), wherein each of the second sub-electrode patterns includes a second electrode body (160a, 160b) and a plurality of second branched electrodes (162a, 162b) formed along the length of the sub-electrode body and extending toward the corresponding first sub-electrode pattern. the N-electrode pattern layer comprises a pair of first sub-electrode patterns (15a, 15b) mechanically separated from each other and disposed in a mirror relationship, each of the first sub-electrode patterns (15a, 15b) including a first electrode body having an elongated distorted C-shape; and the P-electrode pattern layer comprises a pair of second sub-electrode patterns (16a, b) in a mirror relationship, each of the second sub-electrode patterns (16a, 16b) corresponding to each of the first sub-electrode patterns (15a and 15b) and extending out from an half-enclosed opening of the corresponding first sub-electrode pattern (15a, 15b) along an outline of the corresponding first sub-electrode pattern to surround the corresponding first sub-electrode pattern (15a, 15b), wherein each of the second sub-electrode patterns includes a second electrode body (160a, 160b) and a plurality of second branched electrodes (162a, 162b) formed along the length of the sub-electrode body and extending toward the corresponding first sub-electrode pattern.