To provide a plasma display panel wherein widths of insulating wall formed on a substrate are differently formed and a voltage margin of the panel can be expanded and uniformity of luminance can be brought about.

This includes a front face substrate 21 in which numerous sustaining electrodes (23, 24) are formed and which is consisting of a dielectric layer 26 to embed these electrodes and of a protecting film layer 27 formed at a lower face of the dielectric layer 26, numerous address electrodes 28 installed so as to oppose to the front face substrate 21, insulating walls 200 which are numerously formed in a direction paralleled with the address electrodes 28 to partition discharging spaces 300 and whose widths are differently formed, and a rear face substrate 22 consisting of a fluorescent material layer 210 having red, green, and blue colors coated on inner sides of the insulating walls 200.