A display panel includes a first substrate having a top surface and a side surface extending in a direction intersecting the top surface, a second substrate, an insulating layer disposed between the first substrate and the second substrate, a first insulating structure disposed between the insulating layer and the first substrate and being in contact with the insulating layer, a pixel, a signal line having a side surface substantially aligned with the side surface of the first substrate and disposed on the first substrate, a second insulating structure overlapping the signal line, being in contact with the first insulating structure, and having a side surface substantially aligned with the side surface of the first substrate, and a connection pad being in contact with the side surface of the first substrate, the side surface of the signal line, and the side surface of the second insulating structure.