A fed crt having various control and focusing electrodes...

Details A fed crt having various control and focusing electrodes... A fed crt having various control and focusing electrodes...

H - Electricity

01

J

H01J 1/46 (2006.01) H01J 1/62 (2006.01) H01J 3/02 (2006.01) H01J 21/10 (2006.01) H01J 29/04 (2006.01)

Patent

CA 2319395

A plurality of field emission cathodes (601) generate an emission of electrons, wherein the emission of electrons is then controlled and fo-cused using various electrodes (602, 603, 604) to produce an electron beam. Horizontal and verti-cal deflection techniques (605, 606, respectively), similar to those used within a cathode ray tube, operate to scan the individual electron beams onto portions of a phosphor screen (401) in order to generate images. The use of the plurality of field emission cathodes provides for a flatter screen depth than possible with a typical cathode ray tube.

Une pluralité de cathodes (601) à émission par effet de champ génèrent une émission d'électrons et diverses électrodes (602, 603, 604) sont utilisées pour commander et concentrer les électrons émis de façon à produire un champ d'électrons. Des techniques de déviation horizontale et verticale (605, 606, respectivement), semblables à celles mises en oeuvre à l'intérieur des tubes cathodiques, permettent de balayer les faisceaux individuels d'électrons sur des parties d'un écran fluorescent (401) de façon à produire des images. La mise en oeuvre de multiples électrodes à émission par effet de champ rend possible la fabrication d'un écran de profondeur relativement faible en comparaison de la profondeur d'un écran cathodique classique.

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