Cathode body, electron gun, and cathode ray tube employing a ferroelectric emitter
US5874802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Dec 27, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/306
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode, an electron gun, and a cathode ray tube include a ferroelectric electron source. The cathode includes a substrate; a lower electrode layer on the substrate; a cathode layer, on the lower electrode layer, the cathode layer including a ferroelectric emitter; an upper electrode layer, on the ferroelectric cathode layer, the upper electrode layer having electron emitting regions comprising a plurality of electron emission holes for passing electrons emitted from the ferroelectric emitter; and a driving electrode layer, supported by the upper electrode layer, for controlling passage of electrons through the electron emitting regions in the upper electrode layer and the driving electrode layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.