A relation between a twist pitch p of twisted nematic liquid crystal and a thickness d of a liquid crystal layer is set to p/d<8, and polymer stabilization is carried out. In this way, torque to recover from alignment upon application of a voltage to alignment without application of the voltage is increased and response speed of the liquid crystal at decay time is thereby increased. By applying the present technique to a liquid crystal display device which is driven by a reset operation, an overdrive operation or common modulation, high response speed is obtained even when the twisted nematic liquid crystal is used. As a result, the liquid crystal display device can deal with field sequential display mode where higher response speed is required.