Patent ID: 8040307

Claim:
A 2D/3D image display device comprising: a display unit comprising a plurality of gate lines, a plurality of data lines, and a plurality of pixels, the plurality of gate lines crossing the plurality of data lines, and the plurality of pixels being coupled to the plurality of gate lines and the plurality of data lines; and a controller for receiving an input signal and for setting a driving frequency to be a first driving frequency or a second driving frequency according to the input signal, wherein the controller is configured such that if the driving frequency is the second driving frequency, then: the image display device displays same image data for each of a first period and a second period of one frame of an image, and a first video signal derived from the image data is transmitted to one of the plurality of pixels for the first period, the first video signal having a first polarity, and a second video signal derived from the image data is transmitted to the one of the plurality of pixels for the second period, the second video signal having a second polarity.