Patent ID: 6452590
Filing Date: 2002-09-17
Classification: G09G

Abstract:
A method for driving a display panel by controlling potential for selective addressing of electrodes arranged within a screen, the method comprising the steps of:providing first to fourth switches for each of plural data electrodes controlled by display data; using the first switch for making or breaking a current path from a bias potential line to a data electrode corresponding to the first switch; using the second switch for making or breaking a first resonance current path from a power recycling capacitor to a data electrode corresponding to the second switch; using the third switch for making or breaking a second resonance current path from a data electrode corresponding to the third switch to the capacitor; using the fourth switch for making or breaking a current path from a data electrode corresponding to the fourth switch to a ground potential line; connecting all of the first switches to the bias potential line via a bias controlling switch; connecting all of the fourth switches to the ground potential line via a ground controlling switch; connecting all of the second switches to the capacitor via a first auxiliary switch; connecting all of the third switches to the capacitor via a second auxiliary switch; controlling all of the first switches depending on display data in one line prior to controlling the bias controlling switch so as to start supplying current from the bias potential line to the plural data electrodes simultaneously each time selective addressing for the line is performed; controlling all of the second switches depending on display data in one line prior to controlling the ground controlling switch so as to start supplying current from the plural data electrodes to the ground potential line simultaneously each time selective addressing for the line is performed; controlling all of the third switches depending on display data in one line prior to controlling the first auxiliary switch so as to start supplying current from the capacitor to the plural data electrodes simultaneously each time selective addressing for the line is performed; and controlling all of the fourth switches depending on display data in one line prior to controlling the second auxiliary switch so as to start supplying current to the capacitor from the plural data electrodes simultaneously, each time selective addressing for the line is performed.