| 摘要 |
An electronic discharging element provided with a conductive layer (11) formed on one surface of a dielectric substrate (10) and a dielectric layer (12) and a conductive layer (13) successively formed on the other surface of the substrate (10) in this order, with the dielectric layer (12) having a thickness of </= 5 nm and a permittivity which is lower than that of the substrate (10). A method by which electrons are discharged from the surface of the conductive layer (13) by applying a voltage across the conductive layers (11 and 13) of the electron discharging element having the conductive layer (11) formed on one surface of the dielectric substrate (10) and the dielectric layer (12) and conductive layer (13) successively formed on the other surface of the substrate (10), with the dielectric layer (12) having a thickness of </= 5 nm and a permittivity lower than that of the substrate (10), so that the layers (11 and 13) can become a cathode and an anode, respectively. Therefore, the electronic discharging element which discharges electrons by utilizing a tunnel effect and has such a new structure that hardly cause dielectric breakdown even when the voltage is applied, and the electron discharging method by which electrons can be discharged by using the element, can be obtained.
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