DISPLAY DRIVE DEVICE AND DRIVE CONTROLLING METHOD

摘要

A display drive device applied to a display device which drives a display panel (110) comprising a plurality of display pixels (Px) which comprises a gradation voltage setting circuit (40a, 40c)which sets a plurality of gradation voltages and voltage ranges according to each luminosity gradation of the display data, which reverses the gradation voltages for each luminosity gradation of the display data in a predetermined period while providing a change characteristic of the center voltage in reversal of the gradation voltages for each luminosity gradation corresponding to the change inclination of the field through voltage produced when the display signal voltage of each luminosity gradation is applied, and which maintains this change characteristic constant for changing the voltage range value; and a gradation conversion circuit (30a, 30d) which produces display signal voltages based on gradation voltages corresponding to the luminosity gradations of the display data.