A liquid crystal display device and a driving method thereof for reducing the number of data lines and the number of data drive integrated circuits corresponding thereto are disclosed. In the device, a plurality of gate lines is provided in a direction crossing a plurality of data lines. First and second control lines are provided in a direction being parallel to the gate lines. First liquid crystal cells are provided at one side on a basis of the data lines. Second liquid crystal cells are provided at other side on a basis of the data lines. A first switching part is provided for each first liquid crystal cell to apply video signals supplied from the data lines to the first liquid crystal cells under control of the first control line and the gate line. A second switching part is provided for each second liquid crystal cell to apply video signals supplied from the data lines to the second liquid crystal cells under control of the second control line and the gate line.