Conditioning partially-completed CRT bulb assembly for storage a

Details Conditioning partially-completed CRT bulb assembly for storage a Conditioning partially-completed CRT bulb assembly for storage a

1974-06-05

1976-01-13

Lake, Roy

316 21, H01J 900, H01J 938

Patent

active

039320111

ABSTRACT:
In the method of making a cathode-ray tube comprising a luminescent-viewing-screen structure including an aluminum metal layer in contact with a layer of carbon particles, the steps soon after the faceplate panel is heat sealed to the funnel, of flushing the still-hot assembly with a dry noncontaminating gas, such as nitrogen or air, then cooling the assembly to room temperature and then reflushing the assembly with a dry noncontaminating gas, and then capping the assembly with a temporary closure. The assembly so conditioned can be held or stored for a relatively long term between the heat sealing step and the subsequent manufacturing steps without degradation of the conductivity or reflectivity of the aluminum metal layer.

REFERENCES:
patent: 3063777 (1962-11-01), Trax
patent: 3317319 (1967-05-01), Mayaud
patent: 3658401 (1972-04-01), Files
patent: 3703401 (1972-11-01), Deal et al.

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