Patent ID: 8823780

Claim:
An image display device, comprising: a liquid crystal display panel configured to selectively implement 2D images and 3D images; panel driving circuits configured to drive the liquid crystal display panel; a backlight configured to include a plurality of light sources and supply light to the liquid crystal display panel; and a controller including: a data processing circuit configured to select any one of a 2D image data and a 3D image data, interpolate the 2D image data to generate a first frame data having a N multiple 2D image data synchronized with a N multiple frame frequency having a left eye data and a right eye data synchronized with the N multiple frame frequency when the 3D image data is selected, and expand a vertical blank interval where the first and second frame data are not displayed; and a timing controller configured to rearrange the first and second frame data to be suitable for a resolution of the liquid crystal display panel, wherein N is a positive integer equal to or more than 2, wherein the data processing circuit expands a front porch by making earlier a point of time when a data enable signal is changed to a low level if the 3D image data is selected, which instructs to stop addressing the first and second frame data in one frame period, and increases a transmission frequency of the first and second frame data without decreasing the N multiple frame frequency.