Surface conduction electron-emitting device
US4956578A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Jul 27, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/3165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A surface conduction electron-emitting device includes a high-potential electrode provided on a substrate surface, an electron-emitting region provided in contact with the periphery of an exposed part of the high-potential electrode, and a low-potential electrode in contact with the periphery of the electron-emitting region. The low-potential electrode may project upward in the thickness direction of the substrate to a higher level than the high-potential electrode. A device for applying a voltage may further provided between the high-potential electrode and low-potential electrode. The low-potential electrode may be divided into plural numbers and potential may be applied to each of the low-potential electrodes independently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.