(19)
(11) EP 1 457 544 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(48) Corrigendum issued on:
10.11.2004 Bulletin 2004/46

(43) Date of publication:
15.09.2004 Bulletin 2004/38

(21) Application number: 02786170.7

(22) Date of filing: 20.12.2002
(51) International Patent Classification (IPC)7: C09K 11/59, C09K 11/08, H01J 11/02
(86) International application number:
PCT/JP2002/013361
(87) International publication number:
WO 2003/054110 (03.07.2003 Gazette 2003/27)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR

(30) Priority: 21.12.2001 JP 2001389143

(71) Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Kadoma-shi, Osaka 571-8501 (JP)

(72) Inventors:
  • SUGIMOTO, Kazuhiko
    Kyoto-shi, Kyoto 612-8485 (JP)
  • OTANI, Mitsuhiro
    Sakai-shi, Osaka 590-0024 (JP)
  • KAWAMURA, Hiroyuki
    Katano-shi, Osaka 576-0022 (JP)
  • AOKI, Masaki
    Mino-shi, Osaka 562-0024 (JP)
  • HIBINO, Junichi
    Neyagawa-shi, Osaka 572-0802 (JP)

(74) Representative: Balsters, Robert et al
Novagraaf International S.A. 25, avenue du Pailly
1220 Les Avanchets - Geneva
1220 Les Avanchets - Geneva (CH)

   


(54) PHOSPHOR AND METHOD FOR PRODUCTION THEREOF AND PLASMA DISPLAY DEVICE


(57) The present invention relates to a plasma display device apt to increase luminance of a phosphor layer and prevent degradation of a discharge characteristic, and to a phosphor used for the device. This plasma display device has a green phosphor having a crystal structure of Zn2SiO4:Mn, and monovalent oxide is substituted for part of the green phosphor. The monovalent oxide is one or more of lithium oxide (Li2O), sodium oxide (Na2O), potassium oxide (K2O), cesium oxide (Cs2O), rubidium oxide (Rb2O), copper oxide (Cu2O), and silver oxide (Ag2O). This structure allows reduction of oxygen defects occurring in the green phosphor, suppression of the luminance decrease of the green phosphor, and improvement of a discharge characteristic.