Patent ID: 7183705
Filing Date: 2007-02-27
Classification: C09K,H01J

Abstract:
1. A plasma display device comprising: a plasma display panel including a plurality of disposed discharge cells having one of one color and a respective plurality of colors, and disposed phosphor layers that have respective colors corresponding to the respective discharge cells and are excited by ultraviolet rays to emit light, wherein the phosphor layers are excited by ultraviolet rays to emit light, the phosphor layers include a blue phosphor layer comprising a phosphor represented by one of Ba x is 0.2 to 0.8, y is 0.1 to 0.5, and the Eu atoms comprise 25% to 80% concentration of bivalent Eu ions and 20% to 75% concentration of trivalent Eu ions, and further wherein the blue phosphor layer is fired at 950 to 1100° C. in an oxidation atmosphere of oxygen, oxygen-nitrogen, ozone-nitrogen or steam(H