A touch display device includes a timing controller to generate a sync signal for controlling timing of a touch sensor driving period and a display driving period, where the display driving period comprises a first phase to drive odd signal lines according to a first polarity and to drive even signal lines according to a second polarity, a second phase to drive the odd signal lines according to the second polarity and to drive the even signal lines according to the first polarity, and a charge share period between the first phase and the second phase. A set of charge sharing switches couple the odd and even signal lines together during the charge share period and couple the odd and even signal lines together during the touch sensor driving period.