A liquid crystal display driving device that reduces horizontal crosstalk and a liquid crystal display employing the driving device are presented. The driving device includes a common voltage generator that generates first and second common voltages, and the common voltage generator includes a first capacitor provided between a first terminal for outputting the first common voltage and a second terminal for outputting the second common voltage. Since the capacitor is provided between two output terminals of the two common voltages, it reduces the distortion components of the common voltages, thereby reducing horizontal crosstalk. The invention reduces the number of parts in the driving device conferring the added benefit of reduced manufacturing cost.