Patent ID: 8605227

Claim:
An image display device, comprising: a display panel configured to display an image; and a diffractive device configured to operate in a 2D mode to enable perception of the image as a 2D image and operate in a 3D mode to enable perception of the image as a 3D image, wherein the diffractive device includes a plurality of unit devices, and wherein the diffractive device includes barriers formed on boundaries between the plurality of unit devices, wherein the diffractive device comprises: a first substrate and a second substrate facing each other; a first electrode layer formed on the first substrate; a second electrode layer formed on the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the second electrode layer includes a common electrode, wherein the first electrode layer includes a first electrode array including a plurality of first electrodes, a second electrode array including a plurality of second electrodes, and a first insulating layer insulating between the first electrode array and the second electrode array.