Display device and method of driving the same

A display device comprising:

• a pixel unit including a first color pixel configured to emit light of a first color and second color pixels which are located in a unit area set based on the first color pixel and configured to emit light of a second color;
• a converter configured to adjust a voltage level of a data voltage of the first color pixel, based on light emission statuses of the second color pixels, to set a black voltage of the second color pixels to have a first voltage level when at least one of the second color pixels emits light, and to set the black voltage to have a second voltage level when the second color pixels do not emit light;
• and
• a data driver configured to apply the black voltage to the second color pixels.

A method of driving a display device including a target pixel and peripheral pixels located in a unit area set based on the target pixel, the method comprising:

• receiving an input grayscale value corresponding to the target pixel and observation grayscale values corresponding to the peripheral pixels;
• calculating a light emitting pixel number of the peripheral pixels by counting a number of observation grayscale values, which exceeds a reference grayscale value;
• determining a black voltage of the peripheral pixels, based on the light emitting pixel number;
• and
• applying the black voltage to a peripheral pixel which does not emit light among the peripheral pixels,
• wherein an observation grayscale value of the peripheral pixel which does not emit light corresponds to a minimum grayscale within a grayscale range of the input grayscale value.