A display panel according to various embodiments comprises: a first substrate and a second substrate facing each other; a first pad and a second pad between the first substrate and the second substrate at an end of the first substrate; a first connection electrode on a side face of the first pad and a second connection electrode on a side face of the second pad; an insulating layer disposed on a top face of the first substrate and disposed on at least a portion of a top face of the first and second pads; and at least one spread prevention hole in the insulating layer between the first and second pads.