The present invention provides a plasma display panel (PDP) that prevents a frit or a sealing material from entering into a display region during a sealing process of the PDP. The plasma display panel includes a pair of substrates spaced apart from each other by a predetermined gap and facing each other, and a sheet interposed between the pair of substrates. First discharge electrodes and second discharge electrodes are disposed inside the sheet. The second discharge electrodes are spaced apart from the first discharge electrodes. The sheet includes a barrier rib part and a dielectric part. The barrier rib part has a plurality of holes that defines discharge cells together with the pair of substrates. A frit or sealing material is interposed between the dielectric part and each of the pair of the substrates. The frit seals a space formed between the pair of the substrates. A groove is formed on the surface of one substrate of the pair of the substrates. The groove is formed around edge of the substrate outside display region, so that the groove effectively prevent frit from spreading into the display region during manufacturing process of the PDP