Electron emitting device with electron acceleration layer containing conductive microparticles

Patent metadata

Field	Value
Publication number	US-9307627-B2
Application number	US-201414253902-A
Country	US
Kind code	B2
Filing date	Apr 16, 2014
Priority date	Apr 22, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

An electron emitting device includes a lower electrode, a surface electrode, an electron acceleration layer between the lower electrode and the surface electrode, and an electrode selecting unit. The electron acceleration layer is made of at least an insulating material. At least one of the lower electrode and the surface electrode is a stripe-pattern electrode including a plurality of unit electrodes that are regularly arranged. The electrode selecting unit sequentially selects, from among the plurality of unit electrodes, a unit electrode to which a voltage is to be applied. A voltage is applied between the lower electrode and the surface electrode to accelerate electrons between the lower electrode and the surface electrode, so that the electrons are emitted from the surface electrode.

First claim

What is claimed is:

1. An electron emitting device comprising:
a lower electrode;
a surface electrode;
an electron acceleration layer between the lower electrode and the surface electrode, the electron acceleration layer being made of at least an insulating material; and
an electrode selecting unit, wherein
at least one of the lower electrode and the surface electrode is a stripe-pattern electrode including a plurality of unit electrodes that are regularly arranged,
the electrode selecting unit sequentially selects, from among the plurality of unit electrodes, a unit electrode to which a voltage is to be applied,
a voltage is applied between the lower electrode and the surface electrode to accelerate electrons between the lower electrode and the surface electrode, so that the electrons are emitted from the surface electrode, and
the electron acceleration layer is made of a resin material containing only conductive microparticles.

2. The electron emitting device according to claim 1 , wherein
each of the lower electrode and the surface electrode is a stripe-pattern electrode including a plurality of unit electrodes that are regularly arranged,
the plurality of unit electrodes included in the lower electrode and the plurality of unit electrodes included in the surface electrode are arranged so as to cross each other, and
the electrode selecting unit sequentially selects, from among the plurality of unit electrodes included in the lower electrode, a unit electrode to which a voltage is to be applied, and sequentially selects, from among the plurality of unit electrodes included in the surface electrode, a unit electrode to which a voltage is to be applied.

3. The electron emitting device according to claim 1 , wherein
the lower electrode is a stripe-pattern electrode including a plurality of unit electrodes that are regularly arranged, and
the surface electrode is formed of one thin-film electrode that covers the lower electrode.

Assignees

• Sharp Kk

Inventors

• Kaneko Toshihiro
• Iwamatsu Tadashi

Classifications

• H01J1/312 Primary

  having an electric field perpendicular to the surface, e.g. tunnel-effect cathodes of metal-insulator-metal [MIM] type {(H01J1/304- H01J1/308 take precedence)} · CPC title

• H05H5/02 Primary

  Details (targets for producing nuclear reactions H05H6/00) · CPC title