Cathode-ray tube having activated green and blue phosphors

Details Cathode-ray tube having activated green and blue phosphors Cathode-ray tube having activated green and blue phosphors

1996-03-21

1998-10-20

Brock, Michael

Electric lamp and discharge devices

Cathode ray tube

Screen

313468, H01J 2920

Patent

active

058251243

ABSTRACT:
A cathode-ray tube includes a phosphor screen having a tricolor phosphor layer composed of a red phosphor, a green phosphor of ZnS:Cu, Al activated with Ni, Fe, or Co, and a blue phosphor of ZnS:Ag activated with Ni, Fe, or Co. The green phosphor and the blue phosphor have a decay intensity of at most 0.5% upon elapse of 8 milliseconds after excitation is removed therefrom. The green phosphor of ZnS:Cu, Al activated with Ni and the blue phosphor of ZnS:Ag activated with Ni have their afterglow characteristics substantially equalized to the afterglow characteristics of the red phosphor of Y.sub.2 O.sub.2 S:Eu.

REFERENCES:
patent: 3673102 (1972-06-01), Lehmann et al.
patent: 3688144 (1972-08-01), Harao et al.
patent: 3860753 (1975-01-01), Tsuneta et al.
patent: 4510414 (1985-04-01), Fujino et al.
patent: 4772818 (1988-09-01), Koike et al.
patent: 5569977 (1996-10-01), DonoFrio

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