Field emission electron source having carbon nanotubes and method for manufacturing the same
US7997950B2 · kind B2 · utility
9Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2007 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/30469
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission electron source having carbon nanotubes includes a CNT string and a conductive base. The CNT string has an end portion and a broken end portion, the end portion is contacted with and electrically connected to the surface of the conductive base. The CNTs at the broken end portion form a tooth-shape structure, wherein some CNTs protruding and higher than the adjacent CNTs. Each protruding CNT functions as an electron emitter. Further, a method for manufacturing a field emission electron source is provided. The field emission efficiency of the field emission electron source is high.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.