liquid crystal to another display state the method comprises the steps of sequentially and repetitively applying a scanning selection signal to the scanning electrodes the scanning selection signal comprising a former signal of a first voltage and a latter voltage signal of a second voltage different from the first voltage to one of the scanning electrodes to select a particular scanning electrode and applying data signals to the signal electrodes each data signal comprising an information signal for selecting a display state of a picture element on the particular scanning electrode the picture elements on the particular scanning electrode supplied with the former voltage signal are non selectively erased into an erased state and a picture element on the particular scanning electrode supplied with the latter voltage signal is placed in either the one display state or another display state depending on the information signal application_number US 46522595 A description initially as an optical modulation material used in a driving method according to the present invention a material which shows either a first optically stable state or a second optically stable state depending upon an electric field applied thereto i e bistability with respect to the applied electric field particularly a liquid crystal having the above mentioned property may be used preferable liquid crystals having bistability which can be used in the driving method according to the present invention are smectic particularly chiral smectic liquid crystals having ferroelectricity among them chiral smectic c smc or h smh phase liquid crystals are suitable therefor these ferroelectric.