Electron-emitting device and electron-beam generator making use
US4954744A · kind A · utility
84Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1989 |
| Grant date | Sep 4, 1990 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/316
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron-emitting device comprises electrodes mutually opposingly provided on the surface of a substrate, and an electron-emitting area provided between the electrodes, wherein a conductive film having an electrical resistance greater than that of said electron-emitting area and not more than 10.sup.10 .OMEGA./square is provided on the surface of the substrate at least at the peripheral area of the electron-emitting area in the state that it is electrically connected to said electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.