Patent ID: 7088314
Filing Date: 2006-08-08
Classification: H01J

Abstract:
1. A surface discharge type plasma display panel comprising a pixel constituted of first, second and third subpixels which are positioned at respective vertices of an isosceles triangle, comprising: a rear substrate comprising a first write electrode extending in a vertical direction and second and third write electrodes which sandwich said first write electrode therebetween and both extend in said vertical direction; a front substrate comprising a peripheral portion sealed to said rear substrate, an outer surface forming a display surface and an inner surface opposed to an inner surface of said rear substrate; a first horizontal barrier rib formed on said inner surface of said rear substrate, extending in a horizontal direction orthogonal to said vertical direction; second and third horizontal barrier ribs formed on said inner surface of said rear substrate, which sandwich said first horizontal barrier rib therebetween and extend in said horizontal direction; a first vertical barrier rib formed on a portion in said inner surface of said rear substrate which is positioned immediately above said first write electrode, extending in said vertical direction to connect said first and second horizontal barrier ribs to each other; second and third vertical barrier ribs formed on said inner surface of said rear substrate, which sandwich said first vertical barrier rib therebetween, extend in said vertical direction and connect said first and second horizontal barrier ribs to each other; a fourth vertical barrier rib formed on a portion in said inner surface of said rear substrate which is positioned between said first write electrode and said second write electrode, extending in said vertical direction to connect said first and third horizontal barrier ribs to each other; a fifth vertical barrier rib formed on a portion in said inner surface of said rear substrate which is positioned between said first write electrode and said third write electrode, extending in said vertical direction to connect said first and third horizontal barrier ribs to each other; a sustain electrode formed on said inner surface of said front substrate, extending in said horizontal direction to grade-separately intersect said first, second and third write electrodes; first and second scan electrodes formed on said inner surface of said front substrate, which sandwich said sustain electrode therebetween, extend in said horizontal direction and grade-separately intersect said first, second and third write electrodes; and a dielectric layer formed on said inner surface of said front substrate, said dielectric layer covering said sustain electrode and said first and second scan electrodes and comprising a surface which is in contact with respective tops of said first horizontal barrier rib, said second horizontal barrier rib, said third horizontal barrier rib, said first vertical barrier rib, said second vertical barrier rib, said third vertical barrier rib, said fourth vertical barrier rib and said fifth vertical barrier rib, wherein said first write electrode is positioned at least in an isolated subpixel region defined by a vertical direction central axis of said fourth vertical barrier rib, a vertical direction central axis of said fifth vertical barrier rib, a horizontal direction central axis of said first horizontal barrier rib and a horizontal direction central axis of said third horizontal barrier rib, said second write electrode is positioned at least in a first pair subpixel region defined by a vertical direction central axis of said first vertical barrier rib, a vertical direction central axis of said second vertical barrier rib, said horizontal direction central axis of said first horizontal barrier rib and a horizontal direction central axis of said second horizontal barrier rib, said third write electrode is positioned at least in a second pair subpixel region defined by said vertical direction central axis of said first vertical barrier rib, a vertical direction central axis of said third vertical barrier rib, said horizontal direction central axis of said first horizontal barrier rib and said horizontal direction central axis of said second horizontal barrier rib, said first pair subpixel region forms said first subpixel positioned at one of vertices constituting a base of said isosceles triangle, said isolated subpixel region forms said second subpixel positioned at top of said isosceles triangle opposed to said base, and said second pair subpixel region forms said third subpixel positioned at the other one of vertices constituting said base, said surface discharge type plasma display panel further comprising: a first phosphor layer formed on at least said inner surface of said rear substrate in said first pair subpixel region; a second phosphor layer formed on at least said inner surface of said rear substrate in said isolated subpixel region; and a third phosphor layer formed on at least said inner surface of said rear substrate in said second pair subpixel region, wherein said sustain electrode comprises: a first metal auxiliary electrode positioned immediately above said first horizontal barrier rib, extending in said horizontal direction; a first transparent electrode positioned in said first pair subpixel region, protruding from a portion of said first metal auxiliary electrode which is positioned between a portion positioned immediately above a connection between said first horizontal barrier rib and said first vertical barrier rib and a portion positioned immediately above a connection between said first horizontal barrier rib and said second vertical barrier rib towards said first scan electrode; a second transparent electrode positioned in said second pair subpixel region, protruding from a portion of said first metal auxiliary electrode which is positioned between said portion positioned immediately above said connection between said first horizontal barrier rib and said first vertical barrier rib and a portion positioned immediately above a connection between said first horizontal barrier rib and said third vertical barrier rib towards said first scan electrode; and a fifth transparent electrode positioned in said isolated subpixel region, protruding from at least a portion of said first metal auxiliary electrode which is positioned adjacently to a grade-separated intersection with said first write electrode on a side of said third write electrode, towards said second scan electrode in parallel to said first write electrode, said first scan electrode comprises: a second metal auxiliary electrode positioned immediately above said second horizontal barrier rib, extending in said horizontal direction; a third transparent electrode positioned in said first pair subpixel region, protruding from a portion of said second metal auxiliary electrode which is positioned between a portion positioned immediately above a connection between said second horizontal barrier rib and said first vertical barrier rib and a portion positioned immediately above a connection between said second horizontal barrier rib and said second vertical barrier rib towards said sustain electrode; and a fourth transparent electrode positioned in said second pair subpixel region, protruding from a portion of said second metal auxiliary electrode which is positioned between said portion positioned immediately above said connection between said second horizontal barrier rib and said first vertical barrier rib and a portion positioned immediately above a connection between said second horizontal barrier rib and said third vertical barrier rib towards said sustain electrode, said second scan electrode comprises: a third metal auxiliary electrode positioned immediately above said third horizontal barrier rib, extending in said horizontal direction; and a sixth transparent electrode positioned in said isolated subpixel region, protruding from at least a portion of said third metal auxiliary electrode which is positioned adjacently to a grade-separated intersection with said first write electrode on a side of said second write electrode, towards said sustain electrode in parallel to said first write electrode, said third transparent electrode is positioned immediately above said second write electrode and a vertical direction central axis of said third transparent electrode is positioned on a side of said second vertical barrier rib from a vertical direction central axis of said first pair subpixel region, and said fourth transparent electrode is positioned immediately above said third write electrode and a vertical direction central axis of said fourth transparent electrode is positioned on a side of said third vertical barrier rib from a vertical direction central axis of said second pair subpixel region.