The present disclosure relates to a display device using a semiconductor light emitting device and a fabrication method thereof. A display device may include a plurality of semiconductor light emitting device packages; a wiring substrate coupled to the plurality of semiconductor light emitting device packages; and a plurality of wiring electrodes. A semiconductor light emitting device packages may include a plurality of semiconductor light emitting devices; a support substrate coupled to the plurality of semiconductor light emitting devices; and a conversion layer configured to covert a color of light emitted from at least some of the plurality of semiconductor light emitting devices to a different color, forming a red sub-pixel, a green sub-pixel, and a blue sub-pixel. A semiconductor light emitting device corresponding to the red or green sub-pixel and a semiconductor light emitting device corresponding to the blue sub-pixel may have light emitting areas that are of different sizes.