Plasma display panel and multi-plasma display panel

A multi plasma display panel comprising:

• a first plasma display panel;
• a second plasma display panel disposed adjacent to the first plasma display panel in a first direction;
• a third plasma display panel disposed adjacent to the first plasma display panel in a second direction crossing the first direction;
• and
• a fourth plasma display panel that is disposed adjacent to the third plasma display panel in the first direction and is disposed adjacent to the second plasma display panel in the second direction,
• wherein each of the first, second, third, and fourth plasma display panels includes:
• a front substrate;
• a back substrate positioned opposite the front substrate the back substrate includes an exhaust hole;
• a barrier rib positioned between the front substrate and the back substrate to partition a discharge cell;
• and
• a seal portion positioned outside the barrier rib in an area between the front substrate and the back substrate,
• wherein the exhaust hole is formed in an area between the barrier rib and the seal portion, wherein the barrier rib includes a first barrier rib that is parallel to both a first long side and a second long side of the front substrate and the back substrate and a second barrier rib that are parallel to both a first short side and a second short side of the front substrate and the back substrate, wherein the first long side is opposite to the second long side, the first short side is opposite to the second short side, the first long side is adjacent to the first short side and the second short side, and the second long side is adjacent to the first short side and the second short side,
• wherein a distance between the first barrier rib and the seal portion in a first region corresponding to the first long side of each of the front substrate and the back substrate of each of the first to fourth plasma display panels is greater than a distance between the first barrier rib and the seal portion in a second region corresponding to the second long side of each of the front substrate and the back substrate of each of the first to fourth plasma display panels opposite the first region,
• wherein a distance between the second barrier rib and the seal portion in a third region corresponding to the first short side of each of the front substrate and the back substrate of each of the first to fourth plasma display panels adjacent to the first and second regions is greater than a distance between the second barrier rib and the seal portion in a fourth region corresponding to the second short side of each of the front substrate and the back substrate of each of the first to fourth plasma display panels opposite the third region, and wherein the exhaust hole is formed in a corner portion adjacent to the first region and the third region of the back substrate.

A plasma display panel comprising:

• a front substrate and a back substrate disposed opposite the front substrate, the front and back substrates including a pair of oppositely disposed long sides and a pair of oppositely disposed short sides, the back substrate including an exhaust hole;
• barrier ribs positioned between the front and back substrates to partition a discharge cell, a distance between an outermost first barrier rib and the seal in a first region corresponding to one of the long sides of the substrates is greater than a distance between the an outermost first barrier rib and the seal in a second region corresponding to the other long side of the substrates opposite the first region, a distance between an outermost second barrier rib and the seal in a third region corresponding to one of the first short sides of the substrates adjacent to the first and second regions is greater than a distance between an outermost second barrier rib and the seal in a fourth region corresponding to the othershort side of the substrates opposite the third region;
• and
• the exhaust hole is positioned in a corner portion adjacent to the first region and the third region of the back substrate.