Patent ID: 7834841

Claim:
A display drive device which drives a display panel having a plurality of signal lines and a plurality of scan lines, based on display data for a plurality of color components, wherein each of the signal lines corresponds to one of the plurality of color components and wherein the plurality of signal lines are divided into a plurality of groups, the display drive device comprising: a data holding section which captures the display data for the plurality of color components and holds the captured display data separated by color component; and selection circuit sections provided for each group of signal lines, wherein the number of groups of signal lines is equal to the number of color components of the display data, and wherein each group of signal lines corresponds to a different color component, the selection circuit sections sequentially converting color components of the display data held by the data holding section into display signal voltages in a time sharing manner and applying the converted display signal voltages to each corresponding group of signal lines, wherein the selection circuit sections apply, plural times within one horizontal scanning period, a display signal voltage to at least a group of signal lines corresponding to a color component that is to be converted first during each horizontal scanning period, wherein the selection circuit sections apply, in a predetermined order, display signal voltages which correspond to color components of the display data, to each corresponding group of signal lines, and wherein the selection circuit sections perform voltage application such that the number of times of voltage application to a group of signal lines to which a display signal voltage is to be applied last in the predetermined order, is smaller than the number of times of voltage application to any other group of signal lines.