Patent ID: 6774878
Filing Date: 2004-08-10
Classification: G09G

Abstract:
A drive unit for a luminescence display panel comprising:a plurality of drive lines and a plurality of scan lines intersecting each other; a plurality of capacitive light-emitting elements connected between the scan lines and the drive lines at a plurality of intersecting positions by the drive lines and the scan lines; scan mode switching means which capable of selecting a normal scan mode in which all effective light-emitting elements in the luminescence display panel are repeatedly scanned to control light emission and a partial scan mode in which part of the effective light-emitting elements in the luminescence display panel are repeatedly scanned to control light emission; and one of reset control means for resetting all of the plurality of scan lines to the same electrical potential each time the respective scan lines are switched and reset control means for resetting all of the plurality of scan lines and at least drive lines that are driven next for light emission to the same electrical potential, wherein when the partial scan mode is selected by the scan mode switching mean, a control is performed so that the ratio of a drive period, during which the light emission of the light-emitting elements is controlled, to a reset period set by the reset control means is increased as compared with a case in which the ordinary scan mode is selected.