Flat plate-shaped cathode ray tube
US4745344A · kind A · utility
6Cited by
8References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1985 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Nov 6, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/126
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron beam detecting electrode is provided laterally outside an effective picture area, to detect a beam current amount and vertical position of the electron beam. An amount of the electron beam current and a position of the electron are controlled by utilizing an output signal of the electron beam detecting electrode, and a uniform brightness and a uniform distance between horizontal scanning lines are obtainable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.