1. An auto stereoscopic display having sub pixels which comprise color sub pixel and white sub pixel comprising: a left eye pixel comprising a plurality of first color sub pixels and a first white sub pixel; a right eye pixel comprising a plurality of second color sub pixels and a second white sub pixel; and a viewing field separating unit which separates a viewing field of a left image formed by the left eye pixel and a viewing field of a right image formed by the right eye pixel, wherein the first color sub pixels and the first white sub pixel are arranged in one column and the second color sub pixels and the second white sub pixel are arranged in the other another column, and wherein the left eye pixel and the right eye pixel are arranged in a matrix format in which sub pixels having the same colors are diagonally aligned in one of diagonal directions, and orders of sub pixels in a widthwise direction are the same as orders of sub pixels in a lengthwise direction.