Timing controller and display device including the same

The present invention provides a timing controller configured to drive the display device. Between the timing controller includes a receiver that receives a still image signal indicating that the image to be displayed on the display panel, a still image, by modulating the transmission section, a reference clock signal for outputting the output data used for displaying an image the first and second frequency values, clock frequency diffusion unit, a memory system that stores first image data corresponding to a first frame of an image and outputting first image data in response to a spread clock signal and to generate a spread clock signal having a frequency value that is controlled in , and the stop in response to a video signal, a second memory system for place of receiving the video data to output the first image data as the output data and the communication image that corresponds to a second frame that connects back to the first frame through the receiving section including the management. According to the invention, it can be reduced electromagnetic interference, to prevent an error in operation of the display device.