Patent ID: 6181310
Filing Date: 2001-01-30
Classification: G09G

Abstract:
A driving method of a liquid crystal apparatus comprising a pair of opposed substrates holding a liquid crystal layer therebetween, a plurality of scanning electrodes formed on one of said substrates and a plurality of data signal electrodes formed on another of said substrates, said plurality of scanning electrodes divided into a plurality of groups, each group including a plurality of the scanning electrodes, said liquid crystal layer having at least an initial state in which liquid crystal molecules of said liquid crystal layer have a twisted angle of .PHI., a first stable state in which said liquid crystal molecules have an alignment of substantially .PHI.-180.degree. and a second stable state in which said liquid crystal molecules have an alignment of substantially .PHI.+180.degree.; the driving method comprising:(a) within a selected one of said groups, substantially simultaneously applying, a scanning signal to all the plurality of scanning electrodes in the selected group;(b) within the selected one of said groups, applying, a reset pulse of said scanning signal to all the plurality of scanning electrodes in the selected group substantially simultaneously during a reset period;(c) within the selected one of said groups, applying a selection pulse of said scanning signal to all the plurality of scanning electrodes in the selected croup substantially simultaneously during a selection period after said reset period, the selection pulses applied to said plurality of scanning electrodes in the selected group have different waveforms from each other;(d) performing steps (a)-(c) for said plurality of groups sequentially; and(e) within the selected one of said groups, applying a data signal to the plurality of data signal electrodes during the selection period.