Electron emission source, its method of fabrication, and an electron emission device using the electron emission source
US7960903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2006 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Apr 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/0455
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emission source-forming composition includes a carbon-based material; a vehicle composed of a resin component and a solvent component; and at least one metal oxide with an average particle diameter in a range of 100 to 1,000 nm selected from Al2O3, TiO2, and SiO2. The electron emission source-forming composition is sintered under an air atmosphere during electron emission source formation. Therefore, carbon deposits after sintering and degradation of Carbon Nano-Tubes (CNTs) upon sintering can be remarkably reduced. As a result, the electron emission source formed using the composition has a high current density and the electron emission device using the electron emission source exhibits enhanced reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.