Tensioned shadow mask and color cathode ray tube adopting the same
US6437496B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A tensioned shadow mask for a color cathode ray tube (CRT) adopting the same. In the color CRT including a faceplate on an inner side, a phosphor screen, a tensioned mask, and frame assembly secured to the faceplate, a funnel connected to the faceplate, the funnel having a neck portion and a cone portion, an electron gun in the neck portion of the funnel, and a deflection yoke on the cone portion of the funnel, the tensioned mask including a series of parallel strips separated by slits at an interval, tie bars interconnecting adjacent strips and defining slits at intervals, and dummy bridges disposed between adjacent tie bars, the dummy bridges respectively extending from adjacent strips toward each other in respective slits but not interconnecting the adjacent strips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.