Patent ID: 8614771

Claim:
An image display device, comprising: a display panel a first substrate over the display panel; a plurality of first electrodes on the first substrate; a plurality of second electrodes alternately arranged with the plurality of first electrodes; a first alignment layer on the first and second electrodes; a second substrate facing the first substrate; a replica layer on the second substrate and having a concave pattern of half-cylinder shapes, the concave pattern facing the second electrode; a second alignment layer on the concave pattern, the second alignment layer corresponding to ends of the concave pattern contacts the first alignment layer to form a closed space; and a liquid crystal layer in the closed space and comprising liquid crystal molecules, wherein: a 3D image is displayed when different voltages are respectively applied into the first and second electrodes, and a 2D image is displayed when the same voltage is applied into the first and second electrodes, wherein the liquid crystal layer includes liquid crystal molecules having positive refractive index anisotropy such that the replica layer has a refractive index being substantially same as an ordinary refractive index of the liquid crystal molecules wherein each of the plurality of first electrodes and the plurality of second electrodes has a bar shape, and a major axis of the bar shape is parallel to a major axis of the half-cylinder shape of the concave pattern, and wherein the liquid crystal molecules are aligned such that a major axis of the liquid crystal molecules is parallel to the first and second substrates and the major axis of the first electrodes, the second electrodes, and the half-cylinder shape in an OFF state.