A display device comprising: a first and a second substrate (110, 160) facing each other and having a display region, a non-display region and a seal pattern region, the seal pattern region is disposed in the non-display region; a gate line and a data line disposed in the display region of the first substrate, the gate line and the data line crossing each other; a gate link line and a data link line (116, 136) on the first substrate configured to respectively extend from the gate line and the data line to the non-display region; a protection layer on the first substrate having a first height from the first substrate in the display region and a second height from the first substrate in the seal pattern region, the second height being smaller than the first height, to thereby form a first seal pattern groove representing a first seal pattern accommodation structure for accommodating a seal pattern in the seal pattern region, the protection layer having the second height is covering the gate link line and the data link line (116, 136) in the seal pattern region; first and second dams (176, 178) disposed on the second substrate and respectively disposed at both ends of the first seal pattern groove, the first and second dams (176, 178) are configured to form a second seal pattern groove representing a second seal pattern accommodation structure corresponding to the position of the first seal pattern accommodation structure arranged on the first substrate, the seal pattern being at least partially arranged in the first seal pattern accommodation structure and in the second seal pattern accommodation structure. a first and a second substrate (110, 160) facing each other and having a display region, a non-display region and a seal pattern region, the seal pattern region is disposed in the non-display region; a gate line and a data line disposed in the display region of the first substrate, the gate line and the data line crossing each other; a gate link line and a data link line (116, 136) on the first substrate configured to respectively extend from the gate line and the data line to the non-display region; a protection layer on the first substrate having a first height from the first substrate in the display region and a second height from the first substrate in the seal pattern region, the second height being smaller than the first height, to thereby form a first seal pattern groove representing a first seal pattern accommodation structure for accommodating a seal pattern in the seal pattern region, the protection layer having the second height is covering the gate link line and the data link line (116, 136) in the seal pattern region; first and second dams (176, 178) disposed on the second substrate and respectively disposed at both ends of the first seal pattern groove, the first and second dams (176, 178) are configured to form a second seal pattern groove representing a second seal pattern accommodation structure corresponding to the position of the first seal pattern accommodation structure arranged on the first substrate, the seal pattern being at least partially arranged in the first seal pattern accommodation structure and in the second seal pattern accommodation structure.