Fluorescent display apparatus
US4970430A · kind A · utility
7Cited by
3References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent display apparatus as a constituent of picture elements of a large-screen display apparatus which is provided with control electrodes for controlling courses of thermoelectrons emitted from cathodes, thereby decreasing fluctuation in brightness of a fluorescent display cell emitting light upon being bombarded by the electrons and preventing the electrons from bombarding other than predetermined fluorescent display cell with result of no emission of false light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.