A light-emitting device (10) is provided with: a substrate (11); a light-emitting region including a light-emitting portion (17) formed to contact a first electrode layer (12) and a second electrode layer (14); and plural concave portions (16). The light-emitting portion contacting at least the first electrode layer and the dielectric layer in the concave portion. The light-emitting device further comprises a terminal (anode terminal) (15) formed outside the light-emitting region, and connecting one of the first electrode layer (12) and the second electrode layer (14) having larger sheet resistance to a power supply. In the light-emitting region, the plural concave portions (16) are formed such that the sum, per unit area, of a contour length of the planar shapes of the concave portions (16) on an upper face of the dielectric layer (13) increases from a region near the terminal (15) towards a region far from the terminal (15).