Fluorescent discharge cold cathode for an image display device
US4029984A · kind A · utility
20Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Nov 28, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J40/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathodoluminescent image display device utilizes a cold cathode as the source of electrons. The cold cathode comprises a photocathode, an electron multiplier and a fluorescent anode. The structure of the cathode is such that a portion of the light given off by the fluorescent anode is free to feedback and impinge upon the photocathode. The cold cathode disclosed herein is thus a closed loop device having a loop gain G. The electron multiplier has a gain G.sub.m such that the loop gain G of the device is maintained at a value greater than or equal to one thus causing a sustained electron discharge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.