Magnetic matrix display device and computer system for displayin

Details Magnetic matrix display device and computer system for displayin Magnetic matrix display device and computer system for displayin

1996-07-03

1998-05-19

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313422, 313433, H01J 2970

Patent

active

057539987

ABSTRACT:
A display device having a cathode for emitting electrons and a permanent magnet. A two dimensional array of channels extends between opposite poles of the magnet. The magnet generates, in each channel, a magnetic field for forming electrons from the cathode into an electron beam. An electrode grid is disposed between the cathode and the magnet for controlling flow of electrons from the cathode into each channel. A screen has a phosphor coating having a plurality of groups of adjacent pixels facing the side of the magnet remote from the cathode. Each group corresponds to a different channel. A deflector sequentially addresses the electron beam from each channel to each pixel of the corresponding group.

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