Method and apparatus for driving ferroelectric liquid crystal device

Claim 1

A ferroelectric liquid crystal apparatus comprising: a ferroelectric liquid crystal device having a matrix electrode arrangement comprising a plurality of scanning lines and a plurality of data lines, and a ferroelectric liquid crystal disposed between the scanning lines and the data lines, a picture element being defined at each intersection of the scanning lines and the data lines; first means for serially applying a scanning signal to said plurality of scanning lines and for applying in parallel data signals of a first voltage level and a given polarity to at least one selected data line of said plurality of data lines and data signals of a second voltage level at least one non-selected data line of said plurality of data lines; second means for detecting data signals consecutively applied to said data lines by said first means and outputting a detection signal when consecutive data signals of the same voltage polarity, with respect to the second voltage level of one of said non-selected scanning lines, are applied to a particular data line; and third means for controlling said first means responsive to the detection signal so as to apply a voltage signal at the same level as the second voltage level and so as to apply an auxiliary signal of a voltage polarity opposite to the given polarity to said particular data line in synchronism with the voltage signal.