Patent ID: 8319828

Claim:
A 2-dimensional (2D)/3-dimensional (3D) switchable display device comprising: a display unit which forms an image; and a switching visual field separation unit which switches the image formed by the display unit into a 2D image or a 3D image, the switching visual field separation unit comprising; a lens array for separating a visual field and including plurality of lenses and a liquid crystal lens controlled so as to have a refractive power offsetting or reinforcing a refractive power of the lens array, wherein the liquid crystal lens comprises: a first substrate having a first surface on which a first electrode array is disposed and a second surface opposite to the first surface facing the lens array; a second substrate having a first surface on which a second electrode array is disposed facing the first surface of the first substrate; and a liquid crystal layer formed between the first substrate and the second substrate, wherein the first electrode array includes a plurality of first electrodes and each of the plurality of first electrodes face each interface of the plurality of lenses included in the lens array.