Field emission device
US6456014B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/319
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission device comprises an anode plate, an emitter plate having a plurality of filed emission portions that face the anode plate, and a gate plate having openings corresponding to the filed emission portions. The field emission device also comprises a current limiting element composed of a J FET or a MOSFET that is integrally formed with the gate plate and that is inserted between the gate plate and a gate voltage supply terminal. The loss caused by the emitter current is small as the current limiting element is inserted into a gate input portion. If the field emission device including a number of blocks each having the above structure is constituted, a power switching device having sufficient redundancy against a short circuit between the gate and the emitter can be implemented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.