Disclosed are a timing controller, a driving method thereof, and an LCD device using the same. The timing controller includes a receiver configured to receive a timing signal and input video data, a control signal generator configured to generate a control signal by using the timing signal, a data aligner configured to output image data aligned, and a transferor configured to include a plurality of ports for transferring the aligned image data and the control signal to a plurality of source driving ICs. When number of source driving ICs is greater than number of ports, each of the ports is connected to at least two or more source driving ICs.