Electron source with microtips, with focusing grid and high microtip density, and flat screen using same
US6534913B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2000 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | May 8, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J3/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microtip electron source including at least one electron emission zone composed of a plurality of microtips connected electrically to a cathode conductor. At least one gate electrode is positioned opposite the electron emission zone and pierced with apertures located opposite the microtips, to extract the electrons from the microtips. An emitted electron focusing gate is positioned opposite the gate electrode, and includes an aperture unit including at least one slit located opposite at least two successive microtips. A flat display screen can include such a microtip electron source. Further, a manufacturing process of such an electron source is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.