Matsushita Electric Industrial Co., Ltd.

Setoguchi Hiroshi

Masaki Aoki

Junichi Hibino

Kazuhiko Sugimoto

Yuichiro Miyamae

Keiji Horikawa

Tanaka Yoshinori

The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of a plasma display panel (PDP). The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (R,G,B) in color corresponding to each discharge cell are disposed, and phosphor layers (R,G,B) are excited by ultraviolet light to emit light. Green phosphor layer (G) has a green phosphor including ZnSiO:Mn, the element ratio of zinc (Zn) to silicon (Si) at the proximity of its surface is, which is the stoichiometric ratio, and the layer is positively charged or zero-charged.

Plasma display and method of producing phosphor used therein

The present invention relates to a plasma display device and to a method of producing a phosphor to be used for the device, that prevents the phosphor layer from deteriorating, and improves the luminance, life, and reliability, of the PDP. The plasma display device is equipped with a plasma display panel in which a plurality of discharge cells are arranged, phosphor layers (R,G,B) in color corresponding to each discharge cell are allocated, and phosphor layers (R,G,B) are excited by ultraviolet light to emit light. Green phosphor layer (G) has a green phosphor including ZnSiO:Mn, the element ratio of zinc (Zn) to silicon (Si) is 2/1 to 2.09/1 at least at the proximity of the surface, and the layer is positively charged or zero-charged.

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Osaka, Japan

Setoguchi Hiroshi