Data driver and display device having the same

A display device comprising:

• a display panel including a plurality of pixels;
• a scan driver configured to provide a scan signal to the pixels;
• and
• a data driver configured to provide a data signal to the pixels,
• wherein the data driver includes:
• a ramp signal generator configured to generate a first ramp signal and a second ramp signal of which voltage level is lower than a voltage level of the first ramp signal;
• a counter configured to generate a count signal by counting a number of clock pulses of a clock signal;
• and
• a plurality of channels each configured to generate the data signal corresponding to image data based on the first ramp signal, the second ramp signal, and the count signal,
• wherein each of the channels includes:
• a latch circuit configured to divide the image data into a first partial data and a second partial data and configured to latch the first partial data and the second partial data;
• a duplication driver configured to generate a first reference signal and a second reference signal by duplicating the first ramp signal and the second ramp signal;
• a digital-analog converter configured to generate a driving signal corresponding to a first partial data based on the first reference signal and the second reference signal;
• and
• an output circuit configured to sample the driving signal by comparing the second partial data with the count signal to output the data signal.