Plasma display panel and plasma display device

A plasma display panel comprising:

• a first substrate,
• a second substrate opposed to said first substrate;
• and
• a barrier rib disposed between said first substrate and said second substrate,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• wherein a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines, and
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• at least one discharge gap adjoining portion electrically connected to said bus portion through at least one of said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to areas between said plurality of display lines, whose secondary electron emission characteristic is lower than that of said cathode film,
• wherein said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed, and
• said discharge inert film is formed by printing and firing a paste-like material, and has a pattern edge at a position away from said at least one discharge gap adjoining portion by about 50 μm or more as two-dimensionally viewed.

A plasma display panel comprising:

• a first substrate,
• a second substrate opposed to said first substrate;
• and
• a barrier rib disposed between said first substrate and said second substrate,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• wherein a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines, and
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• at least one discharge gap adjoining portion electrically connected to said bus portion through at least one of said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to areas between said plurality of display lines, whose secondary electron emission characteristic is lower than that of said cathode film,
• wherein said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed, and
• said discharge inert film has a pattern edge at a position where a distance from said at least one discharge gap adjoining portion is longer than that from said bus portion as two-dimensionally viewed.

A plasma display panel comprising:

• a first substrate,
• a second substrate opposed to said first substrate;
• and
• a barrier rib disposed between said first substrate and said second substrate,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• wherein a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, whose secondary electron emission characteristic is lower than that of said cathode film,
• wherein said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed, and
• said discharge inert film has exposed surfaces in areas thereof corresponding to areas between said plurality of display lines and areas thereof which part said plurality of first electrodes along said first direction as two-dimensionally viewed.

A plasma display panel comprising:

• first and second substrates opposed to each other;
• and
• a barrier rib disposed between said first and second substrates,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• a plurality of discharge gap adjoining portions electrically connected to said bus portion through said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion, and
• areas between ones of said plurality of discharge gap adjoining portions which are arranged along said second direction are not opposed to said barrier rib as two-dimensionally viewed.

A plasma display panel comprising:

• first and second substrates opposed to each other,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to areas between said plurality of display lines, whose secondary electron emission characteristic is lower than that of said cathode film, and
• said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed,
• said plasma display panel further comprising:
• a plurality of discharge cells arranged on said plurality of display lines,
• wherein said exposed surfaces of said discharge inert film and those of said cathode film are patterned so that the size of surface discharge generated oh said first substrate in each of said plurality of discharge cells depends on the luminescent color of said each of plurality of discharge cells.

A plasma display panel comprising:

• first and second substrates opposed to each other;
• and
• a barrier rib disposed between said first and second substrates,
• wherein said first substrate includes
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• a plurality of discharge gap adjoining portions electrically connected to said bus portion through said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said bus portions, whose secondary electron emission characteristic is lower than that of said cathode film,
• said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed,
• said barrier rib includes at least a plurality of first components extending along said first direction as two-dimensionally viewed, and
• at least one of said plurality of discharge gap adjoining portions has such a shape as to make the size in said first direction of said discharge gap portion adjacent to said discharge gap adjoining portion wider at a portion of an area defined by adjacent ones of said plurality of first components of said barrier rib, which is near said first components, than at a center portion in said second direction of said area.

A plasma display panel comprising:

• first and second substrates opposed to each other;
• and
• a barrier rib disposed between said first and second substrates,
• wherein said first substrate includes
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• a plurality of discharge gap adjoining portions electrically connected to said bus portion through said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion,
• said plurality of discharge gap adjoining portions each include a transparent electrode,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• and
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said discharge gap adjoining portions,
• said barrier rib includes at least a plurality of first components extending along said first direction and a plurality of second components extending along said second direction and opposed to said bus portions as two-dimensionally viewed, and
• at least one of said plurality of discharge gap adjoining portions has such a shape as to make the size in said first direction of said discharge gap portion adjacent to said discharge gap adjoining portion wider at a portion of an area defined by adjacent ones of said plurality of first components of said barrier rib, which is near said first components, than at a center portion in said second direction of said area.

A plasma display panel comprising:

• a first substrate;
• a second substrate opposed to said first substrate;
• and
• a barrier rib disposed between said first and second substrates, including at least a plurality of first components extending along said first direction,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• each of said plurality of first electrodes includes
• a bus portion extending along said second direction;
• a plurality of bridge-building portions extending from said bus portion towards at least one of said plurality of discharge gap portions which said bus portion adjoins;
• and
• at least one discharge gap adjoining portion electrically connected to said bus portion through at least one of said plurality of bridge-building portions and disposed adjacently to said at least one discharge gap portion,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said bus portions, whose secondary electron emission characteristic is lower than that of said cathode film, and
• the size of said bridge-building portions in said second direction is not larger than about twice a covering thickness of said dielectric layer and said cathode film which cover said bridge-building portions.

A plasma display device comprising:

• A plasma display panel comprising first and second substrates opposed to each other;
• and
• a driving device for driving said plasma display panel,
• wherein said first substrate comprises
• a substrate;
• and
• a plurality of first electrodes arranged on said substrate along a first direction, extending along a second direction intersecting said first direction, for defining a plurality of display lines extending along said second direction,
• a plurality of gap portions provided between said plurality of first electrodes include at least a plurality of discharge gap portions corresponding to said plurality of display lines,
• said first substrate further comprises
• a dielectric layer disposed on said substrate, covering said plurality of first electrodes;
• a cathode film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to said plurality of display lines;
• and
• a discharge inert film opposed to said substrate with said dielectric layer interposed therebetween, having exposed surfaces in areas thereof corresponding to areas between said plurality of display lines, whose secondary electron emission characteristic is lower than that of said cathode film, and
• said exposed surfaces of said discharge inert film and those of said cathode film are adjacent to one another as two-dimensionally viewed, and
• said driving device gives a predetermined potential difference across adjacent ones of said plurality of first electrodes during a reset period,
• said plasma display device having a constitution to suppress extension of a surface discharge to said exposed surfaces of said discharge inert film, said surface discharge being generated on said first substrate by supplying said predetermined potential difference during said reset period.