Plasma Display Panel
A plasma display panel (PDP) is made of front panel ( 2 ) and a rear panel. The front panel includes display electrodes ( 6 ), dielectric layer ( 8 ), and protective layer ( 9 ) that are formed on front glass substrate ( 3 ). The rear panel includes electrodes, barrier ribs, and phosphor layers that are formed on a substrate. The front panel and the rear panel are faced with each other, and the peripheries thereof are sealed to form a discharge space therebetween. Each of display electrodes ( 6 ) contains at least silver. Dielectric layer ( 8 ) is made of first dielectric layer ( 81 ) that contains bismuth oxide covering display electrodes ( 6 ), and second dielectric layer ( 82 ) that contains bismuth oxide covering first dielectric layer ( 81 ). The content of bismuth oxide in second dielectric layer ( 82 ) is smaller than the content of bismuth oxide in first dielectric layer ( 81 ).
1 . A plasma display panel (PDP) comprising:
a front panel including display electrodes, a dielectric layer, and a protective layer that are formed on a glass substrate; and
a rear panel including electrodes, barrier ribs, and phosphor layers that are formed on a substrate, wherein the front panel and the rear panel are faced with each other, and peripheries thereof are sealed to form a discharge space therebetween,
wherein each of the display electrodes contains at least silver;
the dielectric layer includes a first dielectric layer containing bismuth oxide and covering the display electrodes, and a second dielectric layer containing bismuth oxide and covering the first dielectric layer; and
a content of the bismuth oxide in the second dielectric layer is smaller than a content of the bismuth oxide in the first dielectric layer.
2 . The PDP of claim 1 , wherein the first dielectric layer includes 20 wt % to 40 wt % (inclusive) of the bismuth oxide therein.
3 . The PDP of claim 2 , wherein the first dielectric layer further includes therein 0.1 wt % to 7 wt % (inclusive) of at least one of molybdenum trioxide, cerium dioxide, manganese dioxide, and tungstic trioxide.
4 . The PDP of claim 1 , wherein the second dielectric layer includes 11 wt % to 20 wt % (inclusive) of the bismuth oxide therein.
5 . The PDP of claim 4 , wherein the second dielectric layer further includes therein 0.1 wt % to 7 wt % (inclusive) of at least one of molybdenum trioxide, cerium dioxide, and tungstic trioxide.
6 . The PDP of claim 1 , wherein one of the first dielectric layer and the second dielectric layer further includes therein at least one of zinc oxide, boron oxide, silicon dioxide, aluminum oxide, calcium oxide, strontium oxide, and barium oxide.
7 . The PDP of claim 1 , wherein the first dielectric layer is thinner than the second dielectric layer.