Electron emitting element, method for producing electron emitting element, electron emitting device, charging device, image forming apparatus, electron-beam curing device, light emitting device, image display device, air blowing device, and cooling device
AssigneeSharp Kabushiki Kaisha
InventorsHiroyuki Hirakawa, Yasuo Imura
Life of this patent
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Abstract
An electron emitting element of the present invention includes: an electrode substrate; a thin-film electrode; and an electron acceleration layer sandwiched between the electrode substrate and the thin-film electrode, the electron acceleration layer including (i) conductive fine particles, (ii) insulating fine particles having an average particle diameter greater than an average particle diameter of the conductive fine particles, and (iii) a crystalline electron transport agent. The crystalline electron transport agent is crystallized in the acceleration layer.
Claims23
An electron emitting element comprising:
- an electrode substrate;
- a thin-film electrode facing the electrode substrate;
- and
- an electron acceleration layer sandwiched between the electrode substrate and the thin-film electrode,
- as a result of a voltage applied between the electrode substrate and the thin-film electrode, electrons being accelerated in the electron acceleration layer so as to be emitted from the thin-film electrode,
- the electron acceleration layer including (1) conductive fine particles which are made of a conductor and have a high resistance to oxidation, (2) insulating fine particles having an average particle diameter greater than an average particle diameter of the conductive fine particles, and (3) a crystalline electron transport agent,
- the crystalline electron transport agent being crystallized to crystals.
A method for producing an electron emitting element that includes:
- an electrode substrate;
- a thin-film electrode facing the electrode substrate;
- and
- an electron acceleration layer sandwiched between the electrode substrate and the thin-film electrode,
- as a result of a voltage applied between the electrode substrate and the thin-film electrode, electrons being accelerated in the electron acceleration layer so as to be emitted from the thin-film electrode,
- the method comprising the steps of:
- forming the electrode acceleration layer by applying, on the electrode substrate, a dispersion solution in which insulating fine particles, conductive fine particles and a crystalline electron transport agent are dispersed;
- forming the thin-film electrode on the electron acceleration layer;
- and
- crystallizing the crystalline electron transport agent.
Dependencies are inferred from the claim text.