1. A display device, comprising: a light volume controller comprising multiple pixel cells, the multiple pixel cells comprising at least one sub-pixel cell; a Dual Polarizing Filter comprising multiple pixel cells and at least one individual control unit, the at least one sub-pixel cells on the light volume controller and the at least one individual control unit on the Dual Polarizing Filter mapped and aligned one-to-one, each of the at least one sub-pixel cell on the light volume controller delivering a total light amount that passes through a corresponding individual control unit on the Dual Polarizing Filter, each individual control unit on the Dual Polarizing Filter changing polarized light status when light passes through it; a polarizer, for converting light emitted from the light controller, if not polarized light, to polarized light before entering the Dual Polarizing Filter; and polarized glasses, for filtering light emitting from each individual control unit on the Dual Polarizing Filter into two portions, one portion of the light emitting from each individual control unit on the Dual Polarizing Filter forms first image, and the other portion of the light forms second image, wherein first image data representing the first image comprises at least one sub-region, and second image data representing the second image comprises at least one sub-region, and at least one sub-region of the first image data and at least one sub-region of the second image data represents an image region having the same geometry shape and same corresponding location coordinates on the first and second images, respectively, the at least one sub-region of the first image data and at least one sub-region of the second image data being mapped to each other accordingly such that when the first and the second images are logically overlapped, a 2D vision is formed on said image region when the corresponding sub-region of the first image data and sub-region of the second image data contains the same data, and a 3D vision is formed on said region when the corresponding sub-region of the first image data and the second image data contains stereo-pair image data.