Electron emitter comprised of dielectric material mixed with metal
US7482739B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Jul 13, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Feb 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dielectric device of higher performance is provided. An electron emitter, to which the dielectric device is applied is provided with: an emitter including a dielectric; and an upper electrode and a lower electrode to which drive voltage is applied in order to emit electrons. The emitter is formed by the aerosol deposition method or the sol impregnation method, and the surface roughness of the upper surface thereof is controlled in the range from 0.1 to 3 in Ra.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.