Electron source device, method of manufacturing the same, and flat display apparatus comprising an electron source device
US6670747B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 23, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Nov 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Phosphor layers are formed on the inner surface of a face plate. An electron source device that emits electrons to excite the phosphor layers is provided on the inner surface of a base plate. The electron source device comprises an alumina substrate that has a number of small through holes. Electron-emitting material is buried in the through holes. A reference electrode is formed on the lower surface of the alumina substrate and contacts the electron-emitting material. A gate electrode is formed on the upper surface of the substrate and insulated from the electron-emitting material. The gate electrode is configured to concentrate an electron field of the electron-emitting material by virtue of an voltage applied between the reference electrode and the gate electrode, thereby to cause the electron-emitting material to emit electrons toward the phosphor layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.