Electron source

Details Electron source Electron source

1996-07-03

1998-06-02

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313422, 313431, G09G 104, H01J 2970

Patent

active

057605483

ABSTRACT:
An electron source comprises cathode means and a permanent magnet. A plurality of channels disposed in the magnet in a two dimensional array of rows and columns and extending between opposite poles of the magnet. The magnet generates, in each channel, a magnetic field which forms electrons received from the cathode means into an electron beam for guidance towards a target. Grid electrode means are disposed between the cathode means and the magnet for controlling flow of electrons from the cathode means into each channel. The grid electrode means comprises a plurality of parallel row conductors and a plurality of parallel column conductors arranged orthogonally to the row conductors. Each channel is located at a different intersection of a row conductor and a column conductor. Electric field isolation means reduces leakage of electric fields from each intersection.

REFERENCES:
patent: 4521714 (1985-06-01), Vaccaro et al.
patent: 4618801 (1986-10-01), Kakino
patent: 4973888 (1990-11-01), Morimoto et al.
patent: 5565742 (1996-10-01), Shichao et al.

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