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AssigneePanasonic Corporation
InventorsMasaki Aoki, Hiroyuki Kawamura, Kazuhiko Sugimoto, Hiroshi Setoguchi, Junichi Hibino, Yoshinori Tanaka
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Phosphor layers (110G, 110B, and 110R) are made of combination of: blue and green phosphors that are positively charged on their surfaces and baked in an oxygen-nitrogen atmosphere to reduce oxygen vacancy, and have a β-alumina crystal structure; and a red phosphor made of an yttrium oxide compound. Uniformly forming such phosphor layers on the wall surfaces of barrier ribs (109) provides equal charge characteristics of the phosphors of respective colors, reduces oxygen vacancy in the phosphors, and inhibits adsorption of various gases in the panel production process. This can stabilize the discharge characteristics and prevent luminance degradation at driving the panel.
A plasma display device having a plasma display panel in which a plurality of discharge cells having a plurality of colors are disposed, phosphor layers having a color corresponding to the respective discharge cells are disposed, and the phosphor layers are excited by ultraviolet light to emit light, wherein the phosphor layers comprise:
Dependencies are inferred from the claim text.