Picture tube with an electron gun having an improved potential s

Details Picture tube with an electron gun having an improved potential s Picture tube with an electron gun having an improved potential s

1980-05-30

1982-12-28

Lieberman, Eli

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313417, H01J 2956, H01J 2996

Patent

active

043664156

ABSTRACT:
The invention is directed to a picture tube comprising an electron gun installed within an evacuated envelope which receives various potentials supplied from a potential source. The electron gun comprises a cathode for generating an electron beam and a plurality of successively arranged electrodes for focusing and accelerating the electron beam. One or more supporting rod secures the electrodes. Each of the supporting rods comprises an insulator portion and a glass resistance portion. The glass resistance portion acts as a solid bulk resistor and secures in direct connection with at least one electrode of the electron gun. Consequently, potentials from the potential source are applied to certain electrodes through the glass resistance body. In a further embodiment the entire supporting rod consists of a homogeneous glass resistance body.

REFERENCES:
patent: 3932786 (1976-01-01), Campbell
patent: 4143298 (1979-03-01), Bing et al.
patent: 4288719 (1981-09-01), Hernquist

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