Electron beam apparatus and image display apparatus using the same
US7884533B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2009 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | May 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/127
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides an electron beam apparatus provided with an electron-emitting device which has a simple structure, shows high electron-emitting efficiency and stably works. This electron beam apparatus has an insulating member and a gate formed on a substrate, a recess portion formed in the insulating member, a protruding portion that protrudes from an edge of the recess portion toward the gate and is provided on an end part of a cathode opposing to the gate, which is arranged on the side face of the insulating member; and makes an electric field converge on an end part in the width direction of the protruding portion to make an electron emitted therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.