Patent ID: 6545657
Filing Date: 2003-04-08
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 to the plurality of scanning signal lines, the plurality of data signal lines and the liquid crystal layer; a scanning-side driving circuit that sequentially supplies horizontal scanning signals to said plurality of scanning signal 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 a sampling period and supply the sampled data signals to each of said plurality of data signal lines; data-side driving circuit that supplies signals to said plurality of sampling switching circuits to set said sampling period; and a 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 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 applied to each of said plurality of data signal lines; a time interval from a point at which said pre-charging period ends to a point that a sampling period of a leading sampling switching element is started is set to be longer than a signal transporting delay time of said sampling switching circuits connected to said data signal lines.