Luminescent display tube with plural cathodes and electron flux

Details Luminescent display tube with plural cathodes and electron flux Luminescent display tube with plural cathodes and electron flux

1977-02-28

1978-03-28

Smith, Alfred E.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Plural ray-type tube

315167, 315334, 315338, H01J 6306, H01J 2950

Patent

active

040817156

ABSTRACT:
In an electronic device such as a fluorescent display tube which comprises an evacuated envelope, a plurality of cathode electrodes and an anode electrode, auxiliary electrodes are arranged between the cathode electrodes and the anode electrode. Each auxiliary electrode is impressed with AC potential superposed on DC potential and acts to disperse the electron flux emitted by the cathode electrodes in the lateral direction thus uniformly distributing the electron flux on the anode electrode.

REFERENCES:
patent: 3746909 (1973-07-01), Runtzel et al.
patent: 3863163 (1975-01-01), Farrell et al.

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