Electron emitting method of electron emitter
AssigneeNGK Insulators, Ltd.
InventorsYukihisa Takeuchi, Tsutomu Nanataki, Iwao Ohwada
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Abstract
An electron emitter has an emitter section formed on a substrate, and a cathode electrode and an anode electrode formed on a same surface of the emitter section. A slit is formed between the cathode electrode and the anode electrode. A drive voltage from a pulse generation source is applied between the cathode electrode and the anode electrode, and the anode electrode is connected to the ground. A collector electrode is provided above the emitter section at a position facing the slit. The collector electrode is connected to a bias voltage source through a resistor. The emitter section is made of a piezoelectric material.
Claims25
A method of emitting electrons from an electron emitter including an emitter section made of a dielectric material, a first electrode in contact with said emitter section, and a second electrode in contact with said emitter section, said method comprising the steps of:
- polarizing said emitter section in one direction;
- and
- applying an electric field beyond a coercive field to said emitter section through said first and second electrodes to reverse polarization of said emitter section for emitting electrons.
Dependencies are inferred from the claim text.