DISPLAY DEVICE

A display device comprises a first substrate portion including a display area and a non-display area positioned near the display area, and including a pad area, and a second substrate portion facing the first substrate portion. The first substrate portion further includes an overlap area overlapping the second substrate portion in a plan view, and a protrusion area that protrudes more than a side of the second substrate portion, a first sub-substrate portion, a first conductive layer including an alignment pad disposed in the pad area on the protrusion area of the first sub-substrate portion, and a second conductive layer including a first alignment signal line electrically connected to the alignment pad on the first conductive layer, the protrusion area includes an open portion, and the first alignment signal line in a plan view is physically separated based on the open portion.