A light refraction controlling panel, a 3D-display, and a method of operating a 3D-display are provided. The light refraction controlling panel includes a transparent substrate, a barrier wall on the transparent substrate, first to fourth electrodes on the barrier wall, the first to fourth electrodes being separated from each other, an electro-wetting prism within the barrier wall, the electro-wetting prism being configured to refract incident light to a desired direction, and an isolation layer between the barrier wall and the first to fourth electrodes, and the electro-wetting prism. One electrode of two adjacent electrodes of the first to fourth electrodes is inside an other electrode of the two adjacent electrodes.