Patent ID: 7006114

Claim:
A display driving apparatus for supplying a gradation-use voltage to a data signal line of a display panel, the gradation-use voltage being inverted in polarity in a predetermined polarity inverting cycle, and being adjusted in accordance with display data, the display driving apparatus comprising: a standard voltage generating section for generating standard voltages; a separating section for separating the standard voltages generated by the standard voltage generating section into a high voltage group and a low voltage group, the standard voltages in the high voltage group having the same polarity as the standard voltages in the low voltage group; a first D/A converting section for (a) receiving the standard voltages in the high voltage group, (b) selecting one of the thus inputted standard voltages in the high voltage group in accordance with the display data, and (c) outputting the thus selected standard voltage as the gradation-display-use voltage; and a second D/A converting section for (d) receiving the standard voltages in the low voltage group, (e) selecting one of the thus inputted standard voltages in the low voltage group in accordance with the display data, and (f) outputting the thus selected standard voltage as the gradation-display-use voltage.