A display device comprising: a substrate including a plurality of first sub-pixels (PX1), a plurality of second sub-pixels (PX2), a plurality of third sub-pixels (PX3); a plurality of first semiconductor light emitting devices disposed in the plurality of first sub-pixels (PX1), and configured to generate first color light of a first main wavelength; a plurality of second semiconductor light emitting devices disposed in the plurality of second sub-pixels (PX2), and configured to generate second color light of a second main wavelength; and a plurality of third semiconductor light emitting devices disposed in the plurality of third sub-pixels (PX3), and configured to generate third color light of a third main wavelength, wherein at least some of the plurality of first semiconductor light emitting devices have different light emitting regions to compensate for a wavelength deviation of the first main wavelength, characterized in that the plurality of first semiconductor light emitting devices include a first-first type of semiconductor light emitting device (310_1), a first-second type of semiconductor light emitting device (310_2), and a first-third type of semiconductor light emitting device (310_3), wherein the first-first type of semiconductor light emitting device (310_1) has a first-first light emitting region (310_1) configured to generate the first color light of the first main wavelength, wherein the first-second type of semiconductor light emitting device (310_2) has a first-second light emitting region having an area larger than an area of the first-first light emitting region and is configured to output the first color light with a smaller wavelength than the first main wavelength, and wherein the first-third type of semiconductor light emitting device (310_3) has a first-third light emitting region having a smaller area than the first-first light emitting region and is configured to output the first color light with a larger wavelength than the first main wavelength. a substrate including a plurality of first sub-pixels (PX1), a plurality of second sub-pixels (PX2), a plurality of third sub-pixels (PX3); a plurality of first semiconductor light emitting devices disposed in the plurality of first sub-pixels (PX1), and configured to generate first color light of a first main wavelength; a plurality of second semiconductor light emitting devices disposed in the plurality of second sub-pixels (PX2), and configured to generate second color light of a second main wavelength; and a plurality of third semiconductor light emitting devices disposed in the plurality of third sub-pixels (PX3), and configured to generate third color light of a third main wavelength, wherein at least some of the plurality of first semiconductor light emitting devices have different light emitting regions to compensate for a wavelength deviation of the first main wavelength, characterized in that the plurality of first semiconductor light emitting devices include a first-first type of semiconductor light emitting device (310_1), a first-second type of semiconductor light emitting device (310_2), and a first-third type of semiconductor light emitting device (310_3), wherein the first-first type of semiconductor light emitting device (310_1) has a first-first light emitting region (310_1) configured to generate the first color light of the first main wavelength, wherein the first-second type of semiconductor light emitting device (310_2) has a first-second light emitting region having an area larger than an area of the first-first light emitting region and is configured to output the first color light with a smaller wavelength than the first main wavelength, and wherein the first-third type of semiconductor light emitting device (310_3) has a first-third light emitting region having a smaller area than the first-first light emitting region and is configured to output the first color light with a larger wavelength than the first main wavelength. <EOS>