Patent ID: 8115388
Filing Date: 2012-02-14
Classification: C09K,H01J

Abstract:
1. A plasma display device comprising: a pair of substrates arranged at a distance so as to face each other; barrier ribs arranged between the pair of substrates, for defining a space between the pair of substrates; an electrode pair arranged on at least one of facing sides of the pair of substrates; a discharge gas sealed in the space defined by the barrier ribs, for generating ultraviolet light as a result of electric discharge upon application of a voltage to the electrode pair; and a phosphor layer containing a phosphor for emitting light as a result of excitation by the ultraviolet light, formed on at least one of the facing sides of the pair of substrates and wall surfaces of the barrier ribs in the space, wherein the phosphor contains an Eu activated silicate phosphor added with at least one element selected from a group consisting of Al, Ga, Y and Gd, represented by the following General Formula (1): where M1 is at least one element selected from the group consisting of Ba, Ca, and Sr; M2 is at least one element selected from the group consisting of Mg and Zn; and y satisfies the condition of 0.001≦y≦0.2, wherein a lattice structure of the phosphor is tetrahedron structures of SiO