Patent ID: 6307532
Filing Date: 2001-10-23
Classification: G09G

Abstract:
A liquid crystal apparatus that is driven by inverting a polarity of a voltage applied to a liquid crystal layer at a predetermined interval, said liquid crystal apparatus comprising:a plurality of scanning signal lines;a plurality of data signal lines crossing the plurality of scanning signal lines to form a plurality of pixels;a plurality of switching elements electrically connected with the plurality of scanning signal lines, the plurality of data signal lines and the liquid crystal layer;at least one scanning-side driving circuit that sequentially supplies horizontal scanning signals to said plurality of scanning lines to make a plurality of switching elements connected to at least one of said plurality of scanning signal lines turn on during a horizontal scanning period;a plurality of sampling switching circuits that are connected to each of said plurality of data signal lines, that sequentially sample data signals during the sampling period and supply the sampled data signals to each of said plurality of data signal lines;a data-side driving circuit that supplies signals to said plurality of sampling switching circuits to set said sampling period; anda plurality of pre-charging switching circuits that simultaneously pre-charge each of said plurality of data signal lines with a pre-charge potential that has a same polarity as a voltage to be applied to the liquid crystal layer of said pixels based on said data signals, during a pre-charging period preceding said sampling period during which said data signals are sequentially supplied to said plurality of data signal lines, a time interval from a point at which an (m-1)th horizontal scanning period ends to a point that said pre-charging period within an m'th horizontal scanning period is started, is set to be longer than a signal transporting delay time of a horizontal scanning signal reaching a pixel positioned farthest away from at least one scanning-side driving circuit.