Liquid crystal display devices to suffer from low contrast at low temperatures because the frequency characteristics of the liquid crystal dielectric constant are degraded. An active matrix liquid crystal display device performs pre-charging in which a pre-charge signal Psig is written with a pre-charge switch before display signals are written to data lines of a display area with a dated driver. The pre-charge signal Psig is the gray-scale level as obtained when no voltage is applied to liquid crystal, such as a common voltage VCOM, thus increasing the contrast at low temperature.