A display driver for driving a display panel includes a voltage data generator circuit calculating a voltage data value from an input grayscale value and a driver circuitry driving the display panel in response to the voltage data value. The voltage data generator circuit includes a basic control point data storage circuit storing therein basic control point data specifying a basic correspondence relationship between the input grayscale value and the voltage data value, a correction data memory storing correction data for each of the pixel circuits, a control point calculation circuit and a data correction circuit. When the voltage data value is calculated for a specific pixel circuit, the control point calculation circuit generates control point data associated with the specific pixel circuit by correcting the basic control point data on the basis of the correction data associated with the specific pixel circuit, and The data correction circuit calculates the voltage data value from the input grayscale value on the basis of the correspondence relationship specified by the control point data associated with the control point data.