Patent ID: 8624492

Claim:
A plasma display panel comprising: 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 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 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 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 opposite the third region, and wherein the exhaust hole is positioned in a corner portion adjacent to the first region and the third region of the back substrate.