Display panel and mother board including the same

A display mother board, comprising:

• a mother substrate comprising at least one display unit region and a cut region, wherein the cut region is a region outside the at least one display unit region, and each of the at least one display unit region comprises a display panel, the display panel respectively comprising:
• a substrate comprising a display region and a non-display region, wherein the non-display region comprises a driver circuit region and an outer region located outside the driver circuit region;
• a pixel array and at least one driver circuit disposed in the display region and the driver circuit region respectively;
• an insulating layer disposed on the substrate and located in the non-display region;
• and
• a metal wall disposed on the insulating layer and located in the outer region, wherein a Poisson's ratio of the metal wall is greater than or equal to 0.32.