Plasma display panel having high brightness and high contrast using light absorption reflection film
First Claim
1. 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 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.
1 Assignment
0 Petitions
Accused Products
Abstract
A plasma display panel having a light absorption reflection film that does not reflect light emitted from a discharge space in a non-discharge region includes: 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 arranged on the rear dielectric layer to define discharge cells; a front substrate facing the rear substrate; a plurality of sustaining electrode pairs composed of X and Y electrodes; a light absorption reflection film including a first light absorption reflection film arranged between the adjacent sustaining electrode pairs 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.
167 Citations
13 Claims
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1. A plasma display panel comprising:
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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 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.
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2. A plasma display panel comprising:
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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. - View Dependent Claims (3, 4, 5)
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6. A plasma display panel comprising:
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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.
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7. A plasma display panel comprising:
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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. - View Dependent Claims (8, 9, 10, 11)
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12. A plasma display panel comprising:
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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. - View Dependent Claims (13)
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Specification