A display device including a substrate having a first region, a second region, and a bending region disposed between the first region and the second region; and a plurality of bending connection lines disposed on the substrate in the bending region and extended in a first direction. Each of the bending connection lines includes a protrusion in a second direction and a recess depressed from the protrusion, and the protrusion of each of the bending connection lines faces the recess of the bending connection lines next thereto.