A liquid crystal display having a plurality of gate lines and a plurality of data lines extending in row and column directions, respectively, are formed on a panel. A switching device connected to the gate line and the data line and a pixel electrode connected thereto are provided in each of pixel areas partitioned by the gate lines and data lines. A data driving circuit and a data driving circuit are also provided on the panel, and apply voltages to the gate lines. A signal wire connected to the data driving circuit and including a plurality of color signal lines is provided on the panel and connects the data driving circuit to a signal controller of a printed circuit board. A pair of the plurality of color signal lines with differential relationship transmit color signals to the data driving circuit. A distance between the pair of the plurality of color signal lines is smaller than a width of each of the pair of the plurality of color signal lines and a distance between a pair of plurality of color signal lines without differential relationship. This relationship of the distances between the signal lines and the width thereof reduces the EMI noise.