Patent ID: 9256075
Filing Date: 2016-02-09
CPC Classification: G02B,G02F,H04N

Claim Text:
1. A method of driving an image display device, the image display device comprising: a display panel configured to display an image; and a diffractive element including: the method comprising: operating the diffractive element in a 2D mode or a 3D mode so that the image of the display panel is perceived as a 2D image or a 3D image after passing through the diffractive element, wherein the operating of the diffractive element in the 3D mode includes applying a common voltage to the second electrode layer and applying voltages to the first electrode layer wherein a polarity of the voltage applied to the first electrode layer of a first zone with respect to the common voltage is different from a polarity of the voltage applied to the first electrode layer of a second zone adjacent to the first zone with respect to the common voltage.