Fluorescent compositions and low-velocity electron excited...

Details Fluorescent compositions and low-velocity electron excited... Fluorescent compositions and low-velocity electron excited...

C - Chemistry, Metallurgy

09

K

31/127

C09K 11/00 (2006.01)

Patent

CA 1072317

ABSTRACT OF THE DISCLOSURE Fluorescent compositions which contain indium oxide and one phosphor selected from the group hereinafter defined in a weight ratio within the range of 1/9 to 9/1, and fluo- rescent display devices having said fluorescent compositions in the form of a fluorescent screen, which can emit green, blue or red light under low-velocity electron excitation, said group consisting of a terbium activated lanthanum oxysulfide phosphor or a terbium activated lanthanum yttrium oxysulfide phosphor [(La1-x, Yx)2O2S:Tb, wherein 0?x<1], a copper and alumiumium activated zinc cadmium sulfide phosphur [(zn1-x, Cdx)S: Cu, Al, wherein 0?x0.1], a europium activated strontium gallium sulfide phosphur (SrGa2S4:Eu2+), a cerium activated yttrium aluminium gallate phosphur [Y3(Al1-y, Gay)5O12:Ce, wherein 0?y?0.5], a manganese activated zinc silicate phosphor (Zn2SiO4:Mn), a terbium activated yttrium oxysulfide phosphor (Y2O2S:Tb), a silver activated zinc sulfide phosphur (ZnS:Ag), a europium activated yttrium oxysulfide phosphor (Y2O23:Eu), a europium activated yttrium oxide phosphor (Y2O3:Eu), and a europium activated yttrium vanadate phosphor (YVO4:Eu).

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