High efficiency dielectric electron emitter
First Claim
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1. An electron emitter comprising:
- an emitter made of a dielectric material; and
a first electrode and a second electrode for being supplied with a drive voltage for emitting electrons;
said first electrode being disposed on a first surface of said emitter;
said second electrode being disposed on a second surface of said emitter;
at least said first electrode having a plurality of through regions through which said emitter is exposed;
wherein electrons are emitted from said first electrode toward said emitter to charge the emitter in a first stage, and electrons are emitted from said emitter in a second stage, andwherein said first electrode comprises at least one of a cluster of a plurality of scale-like members and a cluster of electrically conductive members including the scale-like members, and only a part of said cluster covers and contacts said first surface of said emitter.
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Abstract
An electron emitter has an emitter made of a dielectric material and an upper electrode and a lower electrode for being supplied with a drive voltage for emitting electrons. The upper electrode is disposed on an upper surface of the emitter, and the lower electrode is disposed on a lower surface of the emitter. The upper electrode has a plurality of through regions through which the emitter is exposed. Each of the through regions of the upper electrode has a peripheral portion having a surface facing the emitter and spaced from the emitter.
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Citations
6 Claims
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1. An electron emitter comprising:
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an emitter made of a dielectric material; and a first electrode and a second electrode for being supplied with a drive voltage for emitting electrons; said first electrode being disposed on a first surface of said emitter; said second electrode being disposed on a second surface of said emitter; at least said first electrode having a plurality of through regions through which said emitter is exposed; wherein electrons are emitted from said first electrode toward said emitter to charge the emitter in a first stage, and electrons are emitted from said emitter in a second stage, and wherein said first electrode comprises at least one of a cluster of a plurality of scale-like members and a cluster of electrically conductive members including the scale-like members, and only a part of said cluster covers and contacts said first surface of said emitter. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification