Electron-emitting device and electron-beam generator making use
AssigneeCanon Kabushiki Kaisha
InventorsHidetoshi Suzuki, Ichiro Nomura
Life of this patent
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Abstract
An electron-emitting device comprises electrodes mutually opposingly provided on the surface of a substrate, and an electron-emitting area provided between the electrodes, wherein a conductive film having an electrical resistance greater than that of said electron-emitting area and not more than 10.sup.10 .OMEGA./square is provided on the surface of the substrate at least at the peripheral area of the electron-emitting area in the state that it is electrically connected to said electrodes.
Claims12
An electron-emitting device, comprising electrodes mutually opposingly provided in the surface of a substrate, and an electron-emitting area provided between said electrodes, wherein a conductive film having an electrical resistance greater than that of said electron-emitting area and not more than 10.sup.10 .OMEGA./square is provided on the surface of the substrate at least at the peripheral area of said electron-emitting area in the state that is electrically connected to said electrodes.
An electron-base generator, comprising electrodes mutually opposingly provided on the surface of a substrate;
- an electron-emitting area provided between said electrodes;
- a conductive film having an electrical resistance greater than that of said electron-emitting area and not more than 10.sup.10 .OMEGA./square, provided on the surface of the substrate at least at the peripheral area of said electron-emitting area in the state that it is electrically connected to said electrodes;
- and an electric source for applying a voltage between said electrodes.
Dependencies are inferred from the claim text.