Process for suppressing electron beam drift phenomenon in a...

Details Process for suppressing electron beam drift phenomenon in a... Process for suppressing electron beam drift phenomenon in a...

H - Electricity

01

J

316/9

H01J 9/44 (2006.01) H01J 29/51 (2006.01)

Patent

CA 1244872

ABSTRACT OF THE DISCLOSURE Process for suppressing an electron beam drift phenomenon in a cathode ray tube having a plurality of electron guns within a neck portion thereof, each electron gun including an anode portion, wherein the drift phenomenon results from gradual variation of electrostatic force from the neck portion which is exerted on an electron beam, comprising the steps of applying to the anode portion a voltage equal to or greater than applied during normal operation, and causing the electron gun to generate for a predetermined time period a beam emission which is focussed so as to converge on the screen of the cathode ray tube and which has a magnitude greater than beam emission magnitudes for normal operation so that the drift phenomenon is effectively suppressed.

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