Electron gun for a cathode ray tube having a plurality of electr

Details Electron gun for a cathode ray tube having a plurality of electr Electron gun for a cathode ray tube having a plurality of electr

1993-12-27

1997-09-23

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313412, H01J 2958

Patent

active

056708416

ABSTRACT:
An electron gun having at least one tube, a pair of holders for holding both ends of the tube, a plurality of electrode layers which are provided on the inner surface of the tube so as to form a part of a main lens, at least one conductive layer provided on the surface of the tube, and a plurality of electrodes for forming a part of triode. Also, a method of manufacturing an electron gun comprises the steps of forming a plurality of electrode layers on the inner surface of at least one tube, providing at least one conductive layer on the surface of the tube, providing a pair of holders so as to hold both ends of said tube, providing a voltage supplying device on one of the pair of holders, and welding a plurality of electrodes forming a part of a triode to the other of the pair of holders.

REFERENCES:
patent: 5015925 (1991-05-01), Spanjer
patent: 5045751 (1991-09-01), Numata
patent: 5202606 (1993-04-01), Vrijssen
T. Spanjer et al., "A Compact High-resolution Electron Gun With Electrostatic Focus For Projection CRTs", Proceedings of the SID, vol. 32, No. 4, 1991, pp. 273-278.
Kinjirou Gunbe, "Electrostatic Focusing Image Pickup Tube", Patent Abstracts of Japan, vol. 7, No. 27, (E-156) (1172) Feb. 3, 1983.

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