Patent ID: 7518309

Claim:
A plasma display panel, comprising: a first substrate and a second substrate provided opposing one another with a predetermined gap therebetween; address electrodes extending in a first direction on a surface of the first substrate opposing the second substrate; barrier ribs mounted between the first substrate and the second substrate defining non-discharge regions and discharge cells; a phosphor layer formed within each of the discharge cells; and discharge sustain electrodes extending in a second direction on a surface of the second substrate opposing the first substrate, the second direction being substantially perpendicular to the first direction, wherein the non-discharge regions are formed in areas encompassed by discharge cell abscissas that pass through centers of adjacent second direction discharge cells and discharge cell ordinates that pass through centers of adjacent first direction discharge cells, wherein the discharge sustain electrodes include bus electrodes that extend such that a pair of the bus electrodes are provided for each of the discharge cells and positioned at outer areas of the discharge cells, and protrusion electrodes formed extending from each of the bus electrodes such that a pair of opposing protrusion electrodes are formed within areas corresponding to each discharge cell, theproximal ends of the protrusion electrodes tapering narrower in width in the second direction as the bus electrodes are approached in the first direction, wherein an angle θ between proximal ends of the protrusion electrodes and inner surfaces of the barrier ribs opposing the proximal ends of the protrusion electrodes is set to a predetermined level, wherein barrier ribs defining discharge cells intersect between non-discharge regions in the second direction adjacent the defined discharge cells, and wherein a depth of ends of the discharge cells along the first direction is less than a depth at center areas of the discharge cells, with the depth of the discharge cells reducing as a distance from the centers thereof is increased along the first direction.