Video display device
US4982134A · kind A · utility
8Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a video display device in which the image area of the screen is divided into multiple sectors in the vertical direction and an electron beam is vertically deflected at each of these sectors to display multiple image lines, and particularly to a construction of cathode wires suspended horizontally in order to generate an electron beam at each sector. In this invention, distance between the wire cathodes and back electrode and also between the wire cathodes and the control electrode are held constant by providing insulated members under the wire cathodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.