A display device including a substrate, a plurality of data lines disposed on the substrate, a first color filter disposed between a first data line and a second data line that are adjacent to each other among the data lines, a first dummy color filter configured to overlap a third data line that is adjacent to the first data line, be separated from the first color filter, and display a same color as that of the first color filter, and a second color filter disposed at a region between the first data line and the third data line and configured to display a color different from that of the first color filter. A thickness of the first dummy color filter is smaller than that of the first color filter, and the second color filter is disposed on the first dummy color filter.