Display device with vibration-preventing plate for line cathodes
US4804887A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Nov 18, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A display device includes line cathodes. Separate first electrodes extend in rear of the line cathodes. A second electrode extends in front of the line cathodes and has apertures for guiding electron beams from the line cathodes. The apertures of the second electrode correspond to the separate first electrodes and the line cathodes. A third electrode deflects the electron beams. A screen is exposed to the electron beams. A vibration-preventing plate extends along the line cathodes and has apertures corresponding to the separate first electrodes and the line cathodes. The portions of the vibration-preventing plate between the apertures of the plate are in contact with the line cathodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.