Plasma display panel characterized by high efficiency

A plasma display panel (PDP), comprising:

• a front substrate and a rear substrate which face each other;
• at least one dielectric layer disposed on a side of the rear substrate facing the front substrate;
• a barrier wall disposed on said at least one dielectric layer and interposed between the front substrate and the rear substrate, said barrier wall comprising base portions arranged only on respective sides of a main discharge space, and protruding portions protruding upwardly from the base portions, respectively, defining stepped spaces on both sides of the main discharge space, wherein the stepped spaces are formed by a combination of the base portions and the protruding portions;
• a pair of a scan electrode and a sustain electrode which generate a mutual discharge through the main discharge space;
• a channel space defined by outer walls of the protruding portions of adjacent main discharge spaces;
• an external light absorbing layer which covers the channel space;
• and
• an address electrode which generates an address discharge together with the scan electrode, said scan electrode extending in a first horizontal direction, said address electrode extending in a second horizontal direction perpendicular to the first horizontal direction, and said scan electrode and said address electrode crossing each other, wherein the scan electrode and the address electrode cross each other in the stepped space.