Electron gun for a cathode ray tube having a plurality of electrodes layers forming a main lens
US5670841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1993 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Dec 27, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/4827
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron gun having at least one tube, a pair of holders for holding both ends of the tube, a plurality of electrode layers which are provided on the inner surface of the tube so as to form a part of a main lens, at least one conductive layer provided on the surface of the tube, and a plurality of electrodes for forming a part of triode. Also, a method of manufacturing an electron gun comprises the steps of forming a plurality of electrode layers on the inner surface of at least one tube, providing at least one conductive layer on the surface of the tube, providing a pair of holders so as to hold both ends of said tube, providing a voltage supplying device on one of the pair of holders, and welding a plurality of electrodes forming a part of a triode to the other of the pair of holders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.