Cathode ray tube with glass-to-metal seal using silver chloride cement
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United States of America Patent
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Aug 19, 1986
Grant Date -
N/A
app pub date -
Feb 22, 1984
filing date -
Feb 25, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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