A display device includes a display panel, a data driver and a demultiplexer circuit. The display panel includes first, second, third and fourth data lines, and first, second, third and fourth sub-pixels respectively coupled to the first, second, third and fourth data lines. The data driver includes a first output channel and a second output channel. The demultiplexer circuit selectively couples at least one of the first data line and the third data line to the first output channel in response to first and second switching signals, and selectively couples at least one of the second data line and the fourth data line to the second output channel in response to third and fourth switching signals different from the first and second switching signals.