Cold field emitter
US7888654B2 · kind B2 · utility
10Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Apr 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/06341
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stable cold field electron emitter is produced by forming a coating on an emitter base material. The coating protects the emitter from the adsorption of residual gases and from the impact of ions, so that the cold field emitter exhibits short term and long term stability at relatively high pressures and reasonable angular electron emission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.