Device and method for image data processing

A display device, comprising:

• a display panel including a plurality of pixel circuits;
• and
• a display driver configured to drive the display panel,
• wherein the display driver includes:
• a voltage data generator circuit configured to calculate a voltage data value from an input grayscale value for a first pixel circuit of the plurality of pixel circuits by:
• selecting at least three control points, wherein each of the at least three the control points specifies a correspondence relationship between the input grayscale value and the voltage data value and is generated by correcting a first coordinate of each of a plurality of basic control points based on a respective one of a first plurality of correction values and a second coordinate of each of the plurality of basic control points based on a respective one of a second plurality of correction values, wherein the first coordinate of each of the plurality of basic control points and the second coordinate of each of the plurality of basic control points are corrected independently from each other, wherein a first one of the first plurality of correction values differs from a second one of the first plurality of correction values, and wherein each of the plurality of basic control points specifies a basic correspondence relationship between the input grayscale value and the voltage data value;
• and
• determining at least one midpoint of the at least three control points;
• and
• driver circuitry configured to drive the display panel based at least in part on the voltage data value.

A drive method for driving a display panel including a plurality of pixel circuits, the method comprising:

• calculating a voltage data value from an input grayscale value with respect to a first pixel circuit of the plurality of pixel circuits, wherein the calculating the voltage data value includes:
• preparing basic control point data which specify a basic relationship between the input grayscale value and the voltage data value;
• preparing correction data for each of the plurality of pixel circuits, the correction data comprising a first plurality of correction values and a second plurality of correction values;
• generating control point data associated with the first pixel circuit by:
• correcting a first coordinate of each of a plurality of basic control points of the basic control point data based on a respective one of the first plurality of correction values and a second coordinate of each of the plurality of basic control points based on respective one of the second plurality of corrections values, wherein the first coordinate of each of the plurality of basic control points and the second coordinate of each of the plurality of basic control points are corrected independently from each other, and wherein a first one of the first plurality of correction values differs from a second one of the first plurality of correction values;
• selecting at least three control points of the control point data;
• and
• determining at least one midpoint of the at least three control points, wherein the control point data specify a relationship between the input grayscale value and the voltage data value;
• and
• calculating the voltage data value from the input grayscale value based on a relationship between the input grayscale value and the voltage data value at least partially based on the at least one midpoint of the at least three control points;
• and
• driving the display panel based at least part on the voltage data value.