Cathode ray tube with glass-to-metal seal using silver chloride

Details Cathode ray tube with glass-to-metal seal using silver chloride Cathode ray tube with glass-to-metal seal using silver chloride

1984-02-22

1986-08-19

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Envelope

220 21A, 501 86, 228122, 65154, H01J 2986, B23K 3100, C03B 2320, C03C 2704

Patent

active

046071890

ABSTRACT:
A cathode ray tube (1) having a body (3) of glass material and a faceplate (5) of solid phosphor material. The body (3) and faceplate (5) are sealed together by a sealant (15) of malleable halide material--for example silver chloride, or lead-silver chloride eutectic. Sealing is effected by inserting a ring (15) of sealant material between abutting surfaces of the body (3) and the faceplate (5), heating in vacuum to above the melting point of the sealant, and cooling to allow the sealant to solidify. The faceplate (5) may be of single crystal material--e.g. zinc tungstate or calcium borate, or may be of hot pressed solid material--e.g. zinc yttrium silicate.

REFERENCES:
patent: 254312 (1882-02-01), Heaton et al.
patent: 2203682 (1940-06-01), Foulke
patent: 2330171 (1943-09-01), Rosenthal
patent: 2915153 (1959-12-01), Hitchcock
patent: 3766634 (1973-10-01), Babcock et al.
patent: 3994430 (1976-11-01), Cusano et al.
patent: 4019080 (1977-04-01), Besson

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