Title:
PLASMA DISPLAY UNIT, PHOSPHOR AND PROCESS FOR PRODUCING PHOSPHOR
Document Type and Number:
WIPO Patent Application WO/2003/097768
Kind Code:
A1
Abstract:
A plasma display unit of enhanced electric discharge characteristics wherein the adsorption of water and hydrocarbon gas onto blue phosphor surface is restricted and wherein the luminance deterioration and chromaticity change of phosphor are suppressed. Phosphor layers for use in plasma display include a blue phosphor layer constituted of a compound of the formula Ba(1-x)MgAl10O17:Eux or Ba(1-x-y)SryMgAl10O17:Eux wherein the number of Eu atoms as a constituent thereof is in the range of 0.2 to 0.8 and wherein among the Eu atoms, the concentration of bivalent Eu ions is in the range of 25 to 85% while the concentration of trivalent Eu ions is in the range of 15 to 75%.
Inventors:
Aoki, Masaki (5-12-1, Aoshinke Mino-shi, Osaka, 562-0024, JP)
Kawamura, Hiroyuki (5-28-9, Fujigao Katano-shi, Osaka, 576-0022, JP)
Sugimoto, Kazuhiko (138-8-A-201, Hazukashishimizu-cho Fushimi-k, Kyoto-shi Kyoto, 612-8485, JP)
Otani, Mitsuhiro (3-8-31, Koryonakamachi Sakai-shi, Osaka, 590-0024, JP)
Setoguchi, Hiroshi (33-10-101, Kitashowadai-cho Takatsuki-shi, Osaka, 569-0816, JP)
Hibino, Junichi (919-1-A712, Uchiage Neyagawa-shi, Osaka, 572-0802, JP)
Kawamura, Hiroyuki (5-28-9, Fujigao Katano-shi, Osaka, 576-0022, JP)
Sugimoto, Kazuhiko (138-8-A-201, Hazukashishimizu-cho Fushimi-k, Kyoto-shi Kyoto, 612-8485, JP)
Otani, Mitsuhiro (3-8-31, Koryonakamachi Sakai-shi, Osaka, 590-0024, JP)
Setoguchi, Hiroshi (33-10-101, Kitashowadai-cho Takatsuki-shi, Osaka, 569-0816, JP)
Hibino, Junichi (919-1-A712, Uchiage Neyagawa-shi, Osaka, 572-0802, JP)
Application Number:
PCT/JP2003/006048
Publication Date:
November 27, 2003
Filing Date:
May 15, 2003
Export Citation:
Assignee:
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1006, Oaza Kadoma Kadoma-shi, Osaka, 571-8501, JP)
Aoki, Masaki (5-12-1, Aoshinke Mino-shi, Osaka, 562-0024, JP)
Kawamura, Hiroyuki (5-28-9, Fujigao Katano-shi, Osaka, 576-0022, JP)
Sugimoto, Kazuhiko (138-8-A-201, Hazukashishimizu-cho Fushimi-k, Kyoto-shi Kyoto, 612-8485, JP)
Otani, Mitsuhiro (3-8-31, Koryonakamachi Sakai-shi, Osaka, 590-0024, JP)
Setoguchi, Hiroshi (33-10-101, Kitashowadai-cho Takatsuki-shi, Osaka, 569-0816, JP)
Hibino, Junichi (919-1-A712, Uchiage Neyagawa-shi, Osaka, 572-0802, JP)
Aoki, Masaki (5-12-1, Aoshinke Mino-shi, Osaka, 562-0024, JP)
Kawamura, Hiroyuki (5-28-9, Fujigao Katano-shi, Osaka, 576-0022, JP)
Sugimoto, Kazuhiko (138-8-A-201, Hazukashishimizu-cho Fushimi-k, Kyoto-shi Kyoto, 612-8485, JP)
Otani, Mitsuhiro (3-8-31, Koryonakamachi Sakai-shi, Osaka, 590-0024, JP)
Setoguchi, Hiroshi (33-10-101, Kitashowadai-cho Takatsuki-shi, Osaka, 569-0816, JP)
Hibino, Junichi (919-1-A712, Uchiage Neyagawa-shi, Osaka, 572-0802, JP)
International Classes:
C09K11/64; C09K11/08; C09K11/77; H01J11/02; H01J17/49; (IPC1-7): C09K11/64; C09K11/08; H01J11/02
Attorney, Agent or Firm:
Iwahashi, Fumio c/o Matsushita Electric Industrial Co. Ltd. (1006, Oaza Kadom, Kadoma-shi Osaka, 571-8501, JP)
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