Cold field emitter
US8217565B2 · kind B2 · utility
1Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2011 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Jan 10, 2031 |
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.