Method for reducing resonant frequency vibrations in a cathode ray tube
US6469430B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1999 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Apr 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/0744
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode ray tube including a color selecting, electrode having a plurality of metal tapes; a rectangular frame for holding the color selecting electrode under tension; a plate spring having one end fixed to the frame and the other end having an engaging hole; and a panel having a pin for engaging the engaging hole of the plate spring, the panel being held to the frame by the plate spring; wherein a resonance frequency of the plate spring is different from a resonance frequency of the metal tapes. Since the resonance frequency of the plate spring is different from the resonance frequency of the metal tapes, possible resonance of the metal tapes with a large amplitude by the vibrations of the plate spring due to external vibrations applied to the cathode ray tube can be prevented. Therefore, even though the color selecting electrode has a fine pitch with a large screen and a high definition, the cathode ray tube has vibration resistance to prevent color deviation or the like due to the vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.