A plasma display panel including a dielectric layer, which covers X and Y
electrodes and has a groove interposed between the X and Y electrode. The
growth direction of crystals of a protecting layer disposed on the groove
where discharge is focused is optimized to increase the expected life of
the plasma display panel and to increase the amount of discharge. The
plasma display panel includes a front substrate and a rear substrate
facing each other, discharge cells interposed between the front substrate
and the rear substrate, X and Y electrodes extending parallel to each
other, and a dielectric layer that covers the X and Y electrodes and has
a groove with an inclined surface interposed between the electrodes. A
(1,1,1) growth direction of the crystals corresponding to the inclined
surface of the groove is perpendicular to the inclined surface of the
groove.