Plasma display panel with enhanced luminous efficiency at a reduced discharge firing voltage

A plasma display panel, comprising:

• first and second substrates facing each other with a gap therebetween;
• a plurality of discharge cells formed in the gap between the first and second substrates, wherein each discharge cell comprises first and second adjacent discharge spaces;
• an address electrode elongated in a first direction disposed between the first and second substrates;
• a pair of first electrodes disposed between the first and second substrates and elongated in a second direction that crosses the first direction, the pair of first electrodes being disposed at opposite sides of the first and second discharge spaces, and separated from the address electrode;
• and
• a pair of second substantially parallel electrodes elongated in the second direction, the pair of second electrodes being disposed at adjacent sides of the first and second discharge spaces between the pair of first electrodes,
• wherein each of the first and second discharge spaces is associated with one of the first electrodes and one of the second electrodes,
• wherein the address electrode comprises:
• an elongated portion elongated in the first direction and disposed at a boundary of the discharge cell;
• a first protruding portion extending from the elongated portion of the address electrode toward an interior of the first discharge space;
• and
• a second protruding portion extending from the elongated portion of the address electrode toward an interior of the second discharge space.