Patent ID: 6351076
Filing Date: 2002-02-26
Classification: G09G

Abstract:
A luminescent display panel drive unit includinga plurality of drive lines and a plurality of scanning lines, which intersect each other; and a plurality of capacitive luminescent elements which are provided in respective intersections between the drive lines and the scanning lines and connected to the scanning lines and drive lines and which have polarities, said drive unit comprising: control means for setting a scanning period during which a single scanning line is selected from the plurality of scanning lines in accordance with a scan timing of an input video signal, for specifying a light-emission drive line assigned to said capacitive luminescent element which is connected to the single scanning line and is to be illuminated in accordance with the input video signal during the scanning period, and for setting a reset period during an interval between scanning periods; scanning means for applying a first potential lower than an illumination threshold voltage of said capacitive luminescent element to the single scanning line during the scanning period, for applying a second potential higher than the illumination threshold voltage to scanning lines other than the single scanning line, and for applying the second potential to all the scanning lines during the reset period; and drive means for supplying a drive current to the illumination drive line for forwardly applying, during the scanning period, a positive voltage higher than the illumination threshold voltage to said capacitive luminescent element to be illuminated, for applying a third potential slightly lower than the illumination threshold voltage to the drive lines other than the illumination drive line, and for supplying during the reset period a fourth potential equal to the second potential to all the drive lines.