Image display device using diffractive element

摘要

An image display device includes a display panel displaying an image, and a diffractive element formed to operate 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. In the image display device, the diffractive element includes a first substrate and a second substrate facing each other, a first electrode layer formed on the first substrate that includes a plurality of zones, a second electrode layer formed on the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. Further, when the diffractive element operates in the 3D mode, a common voltage is applied to the second electrode layer, and polarity of voltages applied to the first electrode layer with respect to the common voltage is inverted every zone.

主权项

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:
a first substrate and a second substrate facing each other,a first electrode layer disposed on the first substrate,a second electrode layer formed on the second substrate, anda liquid crystal layer interposed between the first substrate and the second substrate, 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.