Color cathrode ray tube and display device
US5825435A · kind A · utility
3Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1995 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Aug 31, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/076
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
By selecting the number of apertures per vertical row in the shadow mask of a color cathode ray tube to be in the range between 615 and 650, such a cathode ray tube can be used both in a PAL, an NTSC system and a MUSE system without the occurrence of disturbing Moire effects. In a second embodiment the number of apertures per row ranges between 425 and 450.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.