Fluorescent display device and phosphor paste

Details Fluorescent display device and phosphor paste Fluorescent display device and phosphor paste

2007-04-17

2007-04-17

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C313S485000, C313S487000, C313S489000, C252S30140R, C252S30160R

Reexamination Certificate

active

10671626

ABSTRACT:
In a fluorescent display device wherein light is emitted by impinging a low speed electron beam on a phosphor layer formed on an anode, the phosphor layer comprises a compound containing W and/or a compound containing P, K and/or Na. The compound containing P, K and/or Na may be a compound selected from the group consisting of K3PO4, P2O5and Na2SiO3, the compound being added in an amount of 0.01 to 10.00 wt % to the phosphor layer, to provide a higher luminance residual ratio and a higher high temperature exposure characteristic than those of a convention fluorescent display device.

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