Zinc sulfide ceramic material and cathode ray tubes using the sa

Details Zinc sulfide ceramic material and cathode ray tubes using the sa Zinc sulfide ceramic material and cathode ray tubes using the sa

1979-12-20

1982-07-20

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Screen

2523016S, 313467, 501 2, H01J 2920, C04B 3500, C09K 1110

Patent

active

043408397

ABSTRACT:
Highly densed zinc sulfide ceramic materials, which essentially comprise zinc sulfide and alkali metals and/or alkaline earth metals and impurities acting as luminescent center, and which show a high brightness of cathode luminescence under irradiation of electron beam having a low energy, are easily made in the form of the sintered material, by heating the mixture of the said materials in inert or sulfuring atmosphere.

REFERENCES:
patent: 2774682 (1956-12-01), Larach
patent: 2866116 (1958-12-01), Ranby
patent: 3497749 (1970-02-01), Bushey
patent: 3704232 (1972-11-01), Frey et al.
patent: 4035819 (1977-07-01), Nitta et al.
patent: 4038205 (1977-07-01), Minnier et al.
patent: 4041140 (1977-08-01), Nitta et al.
"Sintering of Zinc & Cadmium Sulphides", by P. E. D. Morgan, Sintering & Related Phenomena, Ed. by Kuczynski et al., Gordon & Breach Science Publishers, 1967, pp. 543-551.
"An Introduction to Luminescence of Solids", by H. W. Leverenz, John Wiley & Sons, Inc., pp. 65-66.

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