Method of manufacturing and adjusting a color picture reproduction unit
US4634922A · kind A · utility
3Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Dec 17, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color picture tube comprising three electron-gun systems, in which on the shadow mask or a part connected thereto, phosphorescent marks are attached to the rear side thereof. These marks can be used for checking the exact position of the electron beams during adjustment. By suitably delaying the chrominance signals it is possible to improve the E-W convergence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.