Electric lamp and discharge devices – Cathode ray tube – Screen
Patent
1984-06-04
1987-03-17
DeMeo, Palmer C.
Electric lamp and discharge devices
Cathode ray tube
Screen
313467, H01J 2920
Patent
active
046510540
ABSTRACT:
A color picture tube fitted with a phosphor screen formed of a green-emitting phosphor prepared from copper and aluminum-activated zinc sulfide, a red-emitting phosphor prepared from europium-activated yttrium oxysulfide, and a blue-emitting phosphor prepared from silver-activated zinc sulfide, and wherein the copper concentration ranges between 0.01 and 0.03% by weight and the europium concentration ranges between 5.1 and 6.1% by weight.
REFERENCES:
patent: 3825436 (1974-07-01), Buchanan et al.
patent: 4088921 (1978-05-01), Layman et al.
patent: 4140940 (1979-02-01), Uehara et al.
Itou Takeo
Koike Norio
Sagow Seiji
DeMeo Palmer C.
Kabushiki Kaisha Toshiba
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