CATHODE RAY TUBE WITH SEMICONDUCTOR CATHODE HAVING DEFLECTION ELECTRODES

A semiconductor cathode is provided with deflection electrodes, with which a dipole field can be generated. As a result of this, electrons released at the surface of the semiconductor cathode leave the surface at a certain angle. For use inter alia in camera tubes, display tubes, such an inclined be...

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Bibliographic Details
Main Authors VAN GORKOM, GERARDUS G.P, HOEBERECHTS, ARTHUR M.E
Format Patent
LanguageEnglish
French
Published 24.09.1985
Edition4
Subjects
BASIC ELECTRIC ELEMENTS
CORRECTION OF TYPOGRAPHICAL ERRORS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:A semiconductor cathode is provided with deflection electrodes, with which a dipole field can be generated. As a result of this, electrons released at the surface of the semiconductor cathode leave the surface at a certain angle. For use inter alia in camera tubes, display tubes, such an inclined beam can be aligned without any objection. Positive ions which are released inter alia from residual gases and are accelerated in the direction of the cathode impinge on the cathode at an acute angle. As a result of this the active part of the cathode is not or hardly attacked by said positive ions, so that degradation is prevented.
Bibliography:Application Number: CA19820414416