1. An image display device formed by arranging, in a form of a matrix, unit panels on which sub-pixels emitting colors different from each other are formed, said image display device characterized in that: a first unit panel of the unit panels comprises a first pixel comprising first, second and third sub-pixels of different respective first, second, and third colors, and a second pixel adjacent to the first pixel and directly adjacent a first edge of the unit panel, the second pixel comprising a fourth sub-pixel of the first color, a fifth sub-pixel of the second color, and the third sub-pixel, which is shared with the first pixel, wherein the third sub-pixel is driven by time division, wherein the second color is of the highest visibility relative to the first and third colors and wherein the fifth sub-pixel of the second color is positioned closest to the first edge relative to the fourth and third sub-pixels, and wherein each of the sub-pixels of the first pixel and the second pixel lie in the same plane.