Patent ID: 7034782
Filing Date: 2006-04-25
Classification: G09G

Abstract:
1. A display panel driving device comprising: a display panel having a plurality of row electrode lines, a plurality of column electrode lines intersecting with said row electrode lines, and a plurality of capacitive light emitting elements arranged at a plurality of intersecting positions by said plurality of row electrode lines and said plurality of column electrode lines, respectively; a control circuit which generates a column drive control signal and a row drive control signal for each one cycle having a reset period and a light emission period in accordance with an input image signal, the row drive control signal indicating, as a scan line, one line of said plurality of row electrode lines and the column drive control signal indicating, as a light emission column electrode line corresponding to a capacitive light emitting element driven to emit light on said scan line, at least one line of a plurality of column electrode lines; a column electrode driver circuit which sets a potential of each of said plurality of column electrode lines in accordance with the column drive control signal; and a row electrode driver circuit which sets a potential of each of said plurality of row electrode lines in accordance with the row drive control signal; wherein said column electrode driver circuit, in said reset period supplies a first reset potential to each of said plurality of column electrode lines, and in said light emission period, opens the light emission column electrode line and supplies a non-light emission control potential to column electrode lines other than the light emission column electrode line of said plurality of column electrode lines; and wherein said row electrode driver circuit, in said reset period, supplies a second reset potential to each of said plurality of row electrode lines, and in said light emission period, supplies a selection potential to the scan line and supplies a non-selection potential to row electrode lines other than the scan line of said plurality of row electrode lines, so that a leak current flows into the capacitive light emitting element driven to emit light, as a drive current, via parasitic capacitors of the capacitive light emitting elements connected between said row electrode lines other than the scan line and the light emission column electrode line in said light emission period.