Display device

A display device comprising:

• a substrate including a display area in which a plurality of pixels are arranged and a non-display area positioned around the display area;
• a driver disposed in the non-display area on the substrate;
• a plurality of first crack detection lines disposed in the non-display area on the substrate, wherein at least a part of each of the first crack detection lines is adjacent to a side of the driver and extends in parallel with an edge of the substrate;
• a first dam positioned between the first crack detection lines and the display area;
• a second dam positioned between the first dam and the first crack detection lines and including a plurality of sub-layers;
• a common voltage line disposed in the non-display area on the substrate, and which provides a common voltage to the pixels, and includes a concave part defined at an edge of the common voltage line facing the first crack detection lines;
• and
• a second crack detection line electrically connected to the first crack detection lines, positioned between the first crack detection lines and the display area, and including a first line part and a first connection part contacting the first line part through a first contact hole overlapping one of the sub-layers in a plan view.