Patent ID: 8665198

Claim:
A display driving apparatus comprising: a drive voltage output circuit for outputting a driving voltage corresponding to a gradation voltage inputted to an input terminal to pixel electrodes of image pixels of a display panel; a gradation voltage output circuit for outputting a plurality of multilevel gradation voltages; a decoder directly connected to said drive voltage output circuit during a pre-charging period for setting a voltage of the input terminal to a predetermined pre-charging potential level for selecting one of the plurality of multilevel gradation voltages which corresponds to inputted image data and supplying the selected gradation voltage to the input terminal; a pre-charging voltage supply circuit for outputting a pre-charging voltage to set a voltage of the input terminal to the predetermined pre-charging potential level; a pre-charging switch interconnected between said pre-charging voltage supply circuit and the input terminal; a controller for turning on said pre-charging switch during the pre-charging period and turning off the pre-charging switch after the pre-charging period has expired; and a connecting switch for directly connecting said decoder with said drive voltage output circuit, said controller turning on said connecting switch during the pre-charging period.