Method of screeing projection tube incorporating interference fi

Details Method of screeing projection tube incorporating interference fi Method of screeing projection tube incorporating interference fi

1988-12-22

1990-06-19

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Electrode making

427 73, H01J 922

Patent

active

049349767

ABSTRACT:
A phosphor screen for a cathode ray tube employing an interference filter for projection television is produced by temporarily sealing the face panel and funnel of the tube toegether, forming the screen by a settling technique, and then separating the screened panel and funnel to allow access to the panel for further processing prior to permanently sealing the panel and funnel together.

REFERENCES:
patent: 2662829 (1953-12-01), Krause
patent: 2970930 (1961-02-01), Windsor
patent: 4513024 (1985-04-01), Morita et al.

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