Display device

A display device, comprising:

• a display panel comprising a plurality of pixels;
• a power supply configured to supply first and second supply voltages to drive the pixels;
• a brightness compensator configured to generate a first data correction value corresponding to a voltage level of the second supply voltage and the and to output a first corrected data value by performing a multiply operation on a first input data value and the first data correction value;
• an interpolator configured to calculate a first voltage value corresponding to the first corrected data value using a preset gamma lookup table;
• a first gamma compensator configured to calculate a first voltage correction value corresponding to a voltage level of the second supply voltage and to calculate a first output data value by performing an addition operation on the first voltage value and the first voltage correction value;
• a gamma voltage generator configured to generate a plurality of gamma voltages having a linear relationship;
• and
• a data driver configured to select a first gamma voltage from among the gamma voltages based on the first output data value and to provide the first gamma voltage, as a data voltage, to the display panel,
• wherein:
• the first data correction value is represented by P bits, where P is a natural number, the first input data value is represented by Q bits, where Q is a natural number, the first corrected data value is represented by P+Q−1 bits, and
• wherein the interpolator is configured to:
• determine a range of the first voltage value based on high-order R bits of the first corrected data value, where R is a natural number less than P, and
• generate the first voltage value by interpolating the range of the first voltage value based on low-order bits of the first corrected data value indicating remaining bits of the first corrected data value.