High emission low voltage electron emitter
US7176609B2 · kind B2 · utility
6Cited by
27References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Feb 13, 2007 |
| Priority date | — |
| Expiry date | Aug 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/3125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emitter has an emitter made of a dielectric material, and an upper electrode and a lower electrode to which a drive voltage is applied to emit electrons. The upper electrode is formed on a first surface of the substance serving as the emitter, and the lower electrode is formed on a second surface of the substance serving as the emitter. The upper electrode has a plurality of through regions through which the emitter is exposed. The upper electrode has a surface which faces the emitter in peripheral portions of the through regions and which is spaced from the emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.