Patent ID: 7576487

Claim:
A plasma display device provided with a plasma display panel comprising a plurality of columns of discharge cells having one of a single color and multiple colors, and a phosphor layer disposed in each of the discharge cells, the phosphor layer having a color corresponding to the each discharge cell for emitting light when excited by ultraviolet rays, wherein the phosphor layer is a mixed phosphor and includes a green color phosphor, the green color phosphor being a mixed phosphor comprising: a phosphor of formula M 1-a (Ga 1-x Al x ) 2 O 4 :Mn a (where “M” denotes one of Ca and Sr, 0.01≦a≦0.06, and 0.1≦x≦1.0), and a phosphor of formula (Y 1-a-y Gd a ) (Ga 1-x Al x ) 3 (BO 3 ) 4 :Tb y (where 0≦a≦1, 0.1≦x≦1.0, 0.02≦y≦0.1, 0.08≦1-a-y≦0.98), and a phosphor of formula (Y 1-a-y Gd a ) (Ga 1-x Al x ) 3 (BO 3 ) 4 :Ce y , Tb y (where 0≦a≦1, 0.1≦x≦1.0, 0.02≦y≦0.1, 0.08≦1-a-y≦0.98).