Electron gun assembly for cathode ray tube

Details Electron gun assembly for cathode ray tube Electron gun assembly for cathode ray tube

2007-09-04

2007-09-04

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

C313S451000, C313S417000

Reexamination Certificate

active

10958406

ABSTRACT:
An electron gun assembly for a cathode ray tube includes a cathode for emitting an electron beam, and a plurality of electrodes mounted in a row with predetermined gaps therebetween. The electrodes include a focus electrode for receiving a focus voltage, and an anode electrode surrounding part of the focus electrode for receiving an anode voltage. A support is used to fix the electrodes in an aligned configuration, and a first auxiliary support secures the focus electrode to the support. The focus electrode includes an intermediate aperture section, a small aperture section, and a large aperture section, while the anode electrode includes a large aperture section and a small aperture section. Two second auxiliary supports secure the anode electrode to the support.

REFERENCES:
patent: 4271374 (1981-06-01), Kimura
patent: 5894190 (1999-04-01), Hirota et al.
patent: 6031326 (2000-02-01), Suzuki et al.
patent: 2002/0167260 (2002-11-01), Oh

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