Electron emissive film
US6087765A · kind A · utility
50Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/304
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron-emissive film (170, 730) is made from graphite and has a surface defining a plurality of emissive clusters (100), which are uniformly distributed over the surface. Each of the emissive clusters (100) has dendrites (110) extending radially from a central point (120). Each of the dendrites (110) has a ridge (130), which has a radius of curvature of less than 10 nm. The graphene sheets (160) that form the dendrites (110) have a (002) lattice spacing within a range of 0.342-0.350 nanometers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.