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

31/117

C09K 11/00 (2006.01) C09K 11/64 (2006.01) C09K 11/77 (2006.01)

Patent

CA 1082445

ABSTRACT OF THE DISCLOSURE Fluorescent compositions which contain zinc 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 rod light under low-velocity electron excitation, said group consisting of a copper and-aluminium activated zinc cadmium sulfide phosphor [(Zn1-x, Cdx)S:Cu, Al, wherein 0?x?0.1], a cerium activated yttrium aluminium gallium oxide phosphor [Y3(Al3-y, Gay)5O12:Ce, wherein 0?y?0.5], a manganese activated zinc silicate phosphor (Zn2SiO4:Mn), a terbium activated yttrium lanthanum oxysulfide phosphor [(Y1-z, Laz)2O2S: Tb, wherein 0?z?1], a europium activated strontium gallium sulfide phosphor (SrGa2S4:Eu2+), a silver activated zinc sulfide phosphor (ZnS:Ag), and a europium activated yttrium oxysulfide phosphor (Y2O2S:Eu).

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