Patent ID: 6028579
Filing Date: 2000-02-22
Classification: G09G

Abstract:
A driving method for a liquid crystal device of the type comprising a pair of substrates having thereon a group of scanning electrodes and a group of data electrodes, and a chiral smectic liquid crystal disposed between the substrates so as to form a pixel at each intersection of the scanning electrodes and the data electrodes, said driving method comprising:sequentially applying a scanning selection signal to the scanning electrodes, andapplying data signals to the data electrodes in synchronism with the scanning selection signal, whereinthe scanning selection signal comprises a writing pulse having a pulse width .DELTA.T for determining an optical state of the chiral smectic liquid crystal in cooperation with a data signal,each data signal comprises a data pulse for determining an optical state of the chiral smectic liquid crystal in cooperation with the writing pulse,a data signal applied to a data line is determined based on data to be displayed at a particular pixel on the data line and a current scanning electrode and also on data to be displayed at a subsequent pixel on the data line and a subsequently selected scanning electrode, andat least one of said plurality of data signals includes an auxiliary pulse having a pulse width shorter than .DELTA.T.