Electron emitter and process of fabrication
US7202596B2 · kind B2 · utility
8Cited by
16References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2004 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Feb 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/0428
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emitter is formed by in situ growth from the vapor on catalyst clusters that are adhered by an adhesion layer to a conductive electrode. The emitter comprises hemispheroidal nanofiber clusters that emit electrons at low field strengths and high current densities, producing bright light by the interaction of the electrons and a fluorescent and/or phosphorescent film on an anode spaced across an evacuated gap. The nanofibers may be grown such that the nanofiber clusters are entangled, restricting movement of individual nanofibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.