Method for controlling a structure comprising a source of field emitting electrons
US6462486B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2001 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Jun 22, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/82
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a control process for a structure with field effect elements, the structure comprising a cathode (1) equipped with field effect elements, an anode (2), an extraction grid (7) and an additional grid (14). The process comprises at least one phase in which electrons are emitted to the anode by field effect elements, and at least one regeneration phase during which the electrons output from the elements are not transmitted to the anode. The regeneration phase is implemented by applying an electron blocking voltage (VB) to the additional grid (14) such that electrons drop back to the cathode.The invention is applicable to flat image display screens and any device comprising a field effect cathode (x-ray tube, etc.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.