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US 2004/0104684 A1Published application
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 anode electrode and the cathode electrode. The anode electrode is connected to the ground. A charging film is formed on a surface of the anode electrode.
Claims22
An electron emitter comprising:
- an emitter section made of a dielectric material;
- a first electrode formed in contact with said emitter section;
- a second electrode formed in contact with said emitter section, wherein
- a slit is formed between said first electrode and said second electrode;
- a drive voltage is applied between said first electrode and said second electrode to induce emission of electrons from at least a portion of said emitter section which is exposed through said slit;
- and
- a charging film is formed at least on a surface of said second electrode.
4 more elements
Dependencies are inferred from the claim text.