Electron emitter and method of producing the same
US7307383B2 · kind B2 · utility
31Cited by
30References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jun 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron emitter includes an emitter section having a plate shape, a cathode electrode formed on a front surface of the emitter section, and an anode electrode formed on a back surface of the emitter section. A gap is formed between an outer peripheral portion of the cathode electrode and the front surface of the emitter section. The front surface of the emitter section contacts a lower surface of the outer peripheral portion to form a base end as a triple junction. The gap expands from the base end toward a tip end of the outer peripheral portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.