Flat configuration cathode ray tube

Details Flat configuration cathode ray tube Flat configuration cathode ray tube

1990-01-31

1990-11-27

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313422, G09G 104, H01J 2970

Patent

active

049738895

ABSTRACT:
A flat configuration CRT having positioned behind one or more line cathodes an array of control electrodes for electron beam modulation and shield electrodes for mutually shielding the control electrodes, in which the shield electrodes are connected as a plurality of electrically separate blocks. DC voltages applied to the respective blocks are adjusted such as to establish identical levels of beam current for electron beams which are generated by emission from the line cathodes, thereby enabling accuracy requirements for spacing between these electrodes and the line cathodes to be substantially reduced.

REFERENCES:
patent: 4167690 (1979-09-01), Gange

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