Electron emitter and method of producing the same
First Claim
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1. An electron emitter comprising:
- a substance comprising a dielectric material serving as an emitter;
a first electrode formed in contact with a first surface of said substance serving as the emitter; and
a second electrode formed in contact with a second surface of said substance serving as the emitter,wherein a gap is formed at least between an outer peripheral portion of said first electrode and said first surface of said substance serving as the emitter;
a base end is formed by contact between said first surface of said substance serving as the emitter and a lower surface of said outer peripheral portion facing said first surface; and
when a drive voltage for inducing polarization reversal of said substance serving as the emitter is applied between said first electrode and said second electrode, electric field concentration occurs at a tip end of said outer peripheral portion and said base end for emitting electrons.
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Abstract
An electron emitter includes an emitter section having a plate shape, a cathode electrode formed on a front surface of the emitter section, and an anode electrode formed on a back surface of the emitter section. A gap is formed between an outer peripheral portion of the cathode electrode and the front surface of the emitter section. The front surface of the emitter section contacts a lower surface of the outer peripheral portion to form a base end as a triple junction. The gap expands from the base end toward a tip end of the outer peripheral portion.
60 Citations
30 Claims
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1. An electron emitter comprising:
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a substance comprising a dielectric material serving as an emitter; a first electrode formed in contact with a first surface of said substance serving as the emitter; and a second electrode formed in contact with a second surface of said substance serving as the emitter, wherein a gap is formed at least between an outer peripheral portion of said first electrode and said first surface of said substance serving as the emitter; a base end is formed by contact between said first surface of said substance serving as the emitter and a lower surface of said outer peripheral portion facing said first surface; and when a drive voltage for inducing polarization reversal of said substance serving as the emitter is applied between said first electrode and said second electrode, electric field concentration occurs at a tip end of said outer peripheral portion and said base end for emitting electrons. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electron emitter comprising:
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a substance comprising a dielectric material serving as an emitter; a first electrode formed in contact with a first surface of said substance serving as the emitter; and a second electrode formed in contact with a second surface of said substance serving as the emitter, wherein when said first electrode is projected on said first surface, said second electrode is projected on said second surface, and a projection image of said first electrode and a projection image of said second electrode are compared with each other, the projection image of said second electrode protrudes from the projection image of said wherein an outer peripheral portion of the projection image of said second electrode protrudes from a tip end of an outer peripheral portion of the projection image of said first electrode by 1 to 500μ
at most. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification