A plasma display panel is provided. The plasma display panel comprises: a front substrate; a rear substrate opposite to the front substrate; a discharge cell formed between the front substrate and the rear substrate; a first electrode and a second electrode opposite to each other in the discharge cell; a third electrode intersecting the first electrode and the second electrode in the discharge cell; a first alignment mark formed in the rear substrate; and a lower dielectric layer for covering the third electrode and the first alignment mark, wherein the lower dielectric layer comprises CuO, and a thickness of the lower dielectric layer is 5 mum to 12 mum.