Cathode, electron gun, and cathode-ray tube having a heating ele

Details Cathode, electron gun, and cathode-ray tube having a heating ele Cathode, electron gun, and cathode-ray tube having a heating ele

1994-05-20

1996-02-13

Snow, Walter E.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313422, 313591, H01J 2950

Patent

active

054913756

ABSTRACT:
A cathode, an electron gun, and a cathode-ray tube, having a configuration wherein a heat source for heating an electron emission portion in which an electric field is applied to the tip so that electrons are pulled out is disposed, whereby instability and reduction in amount of emitted electron rays which are due to an effect of adsorbed gas molecules can be prevented from occurring.

REFERENCES:
patent: 3872351 (1975-03-01), Smith et al.
patent: 4019077 (1977-04-01), Sakitani
patent: 4625143 (1986-11-01), Kobayashi

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