Display device and method of driving the same, and electronic device

A method of driving a display device, the method comprising:

• storing a first reference black grayscale voltage corresponding to a first reference dimming level among a plurality of dimming levels and a second reference black grayscale voltage corresponding to a second reference dimming level among the plurality of dimming levels;
• and
• generating an auxiliary black grayscale voltage of an auxiliary dimming level between the first reference dimming level and the second reference dimming level,
• wherein the auxiliary black grayscale voltage has a voltage higher than a voltage obtained by interpolating the first reference black grayscale voltage and the second reference black grayscale voltage at the auxiliary dimming level.

An electronic device, comprising:

• a processor configured to provide input image data;
• a display device configured to display an image based on the input image data;
• wherein the display device comprises:
• pixels connected to scan lines and data lines;
• a data driver configured to generate a data signal to be supplied to the data lines, using gamma voltages;
• and
• a gamma driver configured to generate the gamma voltages,
• wherein the gamma driver includes:
• a minimum grayscale voltage generator configured to store a first reference black grayscale voltage corresponding to a first reference dimming level and a second reference black grayscale voltage which corresponds to a second reference dimming level and has a voltage lower than the first reference black grayscale voltage, and generate an auxiliary black grayscale voltage of an auxiliary dimming level between the first reference dimming level and the second reference dimming level, and
• wherein the auxiliary black grayscale voltage has a voltage higher than a voltage obtained by interpolating the first reference black grayscale voltage and the second reference black grayscale voltage at the auxiliary dimming level.