Plasma display unit

Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device

Reexamination Certificate

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C313S483000, C313S484000, C313S485000, C313S486000, C313S487000, C252S30140R, C252S30140P, C252S30160R, C252S30160P, C427S066000

Reexamination Certificate

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10489326

ABSTRACT:
A plasma display device includes a blue phosphor composed of a compound represented by Me3MgSi2O8:Eu (where, Me is at least calcium (Ca), strontium (Sr), or barium (Ba)). Concentration of bivalent Eu ions is 45 to 95% and concentration of trivalent Eu ions is 5 to 55%, of the europium (Eu) atoms contained in the blue phosphor layer. The plasma display device has less luminance degradation in a panel manufacturing process, high luminance, and long lifetime.

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patent: 6802990 (2004-10-01), Toda et al.
patent: 64-6087 (1989-01-01), None
H. Yamamoto, “Phosphors For Next-Generation Display Devices”, Applied Physics, vol. 70, No. 3 (2001), pp. 309-312 with partial translation.
M. Shiiki et al., “Thermal degradation of PDP phosphors”, Technical Report of IEICE. EID99-94 (Jan. 2000), pp. 117-122.
H. Yamamoto, “Phosphors For Next-Generation Display Devices”, Applied Physics, vol. 70, No. 3 (2001), pp. 309-312 with partial translation.
M. Shiki et al., “Thermal degradation of PDP phosphors”, Technical Report of IEICE. EID99-94 (Jan. 2000), pp. 117-122.

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