A scan display system includes a picture receiving unit, a scan needle, a picture display screen having first and second opposing surfaces, and a driving unit. The scan needle includes a substrate, a first color light emitting pixel array comprising a plurality of first color light emitting pixels, a second color light emitting pixel array comprising a plurality of second color light emitting pixels, and a third color light emitting pixel array comprising a plurality of third color light emitting pixels. The first color light emitting pixel array is parallel to the second color light emitting pixel array, and the second color light emitting pixel array is parallel to the third color light emitting pixel array. The first color light emitting pixel array, the second color light emitting pixel array, and the third color light emitting pixel array extend in the horizontal direction.