| abstract |
The present invention provides a phosphor and a plasma display device that have improved luminance deterioration, chromaticity change, or discharge characteristics, and high initial characteristics. The phosphor of the present invention is an alkaline earth metal aluminate phosphor containing an element M (where M is at least one element selected from the group consisting of Nb, Ta, W and B). Thus, the concentration of M in the vicinity of the surface of the phosphor particles is higher than the average concentration of M in the entire phosphor particles. In the plasma display device of the present invention, a plurality of discharge cells of one color or a plurality of colors are arranged, and phosphor layers (110B, 110R, 110G) of colors corresponding to the respective discharge cells are arranged, and the phosphor layers are arranged The plasma display device includes a plasma display panel (100) that emits light when excited by ultraviolet rays, wherein the phosphor layer includes a blue phosphor, and the blue phosphor (110B) uses the phosphor. [Selection] Figure 2 |