Plasma display panel having high brightness and high contrast using light absorption reflection film

A plasma display panel comprising:

• a rear substrate;
• a plurality of address electrodes arranged on a surface of the rear substrate;
• a rear dielectric layer arranged on the rear substrate to cover the address electrodes;
• a plurality of barrier ribs adapted to define discharge cells, the plurality of barrier ribs arranged on an upper portion of the rear dielectric layer;
• a fluorescent material adapted to coat an inner surface of the discharge cells;
• a front substrate arranged to face the rear substrate;
• a plurality of sustain electrode pairs, each pair composed of X and Y electrodes adapted to form unit discharge cells and to cross the address electrodes and arranged on a lower surface of the front substrate;
• a light absorption reflection film including a first light absorption reflection film arranged between adjacent sustain electrode pairs on a lower surface of the front substrate and a second light absorption reflection film having a different width than that of the first light absorption reflection film, the second light absorption reflection film arranged on a lower surface of the first light absorption reflection film;
• and
• a front dielectric layer arranged on a lower surface of the front substrate to cover the X and Y electrodes and the light absorption reflection film;
• wherein a width of the light absorption reflection film is gradually increased from an upper surface of the first light absorption reflection film to a lower surface of the second light absorption reflection film.

A plasma display panel comprising:

• a rear substrate;
• a plurality of address electrodes arranged on a surface of the rear substrate;
• a rear dielectric layer arranged on the rear substrate to cover the address electrodes;
• a plurality of barrier ribs adapted to define discharge cells, the plurality of barrier ribs arranged on an upper portion of the rear dielectric layer;
• a fluorescent material adapted to coat an inner surface of the discharge cells;
• a front substrate arranged to face the rear substrate;
• a plurality of sustain electrode pairs, each pair composed of X and Y electrodes adapted to form unit discharge cells and to cross the address electrodes and arranged on a lower surface of the front substrate;
• a light absorption reflection film including a first light absorption reflection film arranged between adjacent sustain electrode pairs on a lower surface of the front substrate and a second light absorption reflection film having a different width than that of the first light absorption reflection film and composed of a material having a higher reflectance than that of the first light absorption reflection film, the second light absorption reflection film arranged on a lower surface of the first light absorption reflection film;
• and
• a front dielectric layer arranged on a lower surface of the front substrate to cover the X and Y electrodes and the light absorption reflection film;
• wherein the first light absorption reflection film and the second light absorption reflection film are arranged to have a stair shape having a step difference;
• and
• wherein when the greater of the widths of the first and second light absorption reflection films is A and the narrower width is B, a value of (A−B)/A×100 is in a range of 5-70.

A plasma display panel comprising:

• a rear substrate;
• a plurality of address electrodes arranged on a surface of the rear substrate;
• a rear dielectric layer arranged on the rear substrate to cover the address electrodes;
• a plurality of barrier ribs adapted to define discharge cells, the plurality of barrier ribs arranged on an upper portion of the rear dielectric layer;
• a fluorescent material adapted to coat an inner surface of the discharge cells;
• a front substrate arranged to face the rear substrate;
• a plurality of sustain electrode pairs, each pair composed of X and Y electrodes adapted to form unit discharge cells and to cross the address electrodes and arranged on a lower surface of the front substrate;
• a light absorption reflection film including a first light absorption reflection film arranged between adjacent sustain electrode pairs on a lower surface of the front substrate and a second light absorption reflection film having a different width than that of the first light absorption reflection film and composed of a material having a higher reflectance than that of the first light absorption reflection film, the second light absorption reflection film arranged on a lower surface of the first light absorption reflection film;
• and
• a front dielectric layer arranged on a lower surface of the front substrate to cover the X and Y electrodes and the light absorption reflection film;
• wherein a width of the light absorption reflection film is gradually increased from an upper surface of the first light absorption reflection film to a lower surface of the second light absorption reflection film.

A plasma display panel comprising:

• a rear substrate;
• a plurality of address electrodes arranged on a surface of the rear substrate;
• a rear dielectric layer arranged on the rear substrate to cover the address electrodes;
• a plurality of barrier ribs adapted to define discharge cells, the plurality of barrier ribs arranged on an upper portion of the rear dielectric layer;
• a fluorescent material adapted to coat an inner surface of the discharge cells;
• a front substrate arranged to face the rear substrate;
• a plurality of sustain electrode pairs, each pair composed of X and Y electrodes adapted to form unit discharge cells and to cross the address electrodes and arranged on a lower surface of the front substrate;
• a light absorption reflection film undercut such that a width of a lower surface is narrower than that of an upper surface contacting the front substrate, the light absorption reflection film arranged between adjacent sustain electrode pairs on a lower surface of the front substrate;
• and
• a front dielectric layer arranged on a lower surface of the front substrate to cover the X and Y electrodes and the light absorption reflection film;
• wherein side surfaces of the light absorption reflection film have a slope angle in a range of 5-80° with respect to the lower surface of the front substrate, and when the lower surface of the light absorption reflection films is A and the upper surface of the light absorption reflection film is B, the value of (A−B)/A×100 is in a range of 5-70.