Thin film transistor array panel and display device including the same

A display device comprising:

• a display area including a plurality of pixels;
• a peripheral area formed around the display area, the peripheral area including a first peripheral area disposed at a side of the display area;
• a plurality of data lines configured to respectively apply a plurality of data voltages to the pixels, the data lines including a plurality of first data lines at least a portion of which is disposed in the display area;
• and
• a plurality of first dummy data lines substantially formed in the first peripheral area and extending along a first boundary edge between the display area and the first peripheral area,
• wherein a dot including a plurality of pixels representing different colors from one another have TFTs connected to the first data lines, the dot being adjacent to the first boundary edge, and
• wherein each of the plurality of first data lines makes a pair with and electrically connected to each one of at least a portion of the first dummy data lines.