Color cathode-ray tube apparatus with multi-lens electron focusing and yoke deflection
US6586868B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Jan 8, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/488
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron gun structure applied to a color cathode-ray tube comprises a focus electrode, an ultimate acceleration electrode and at least one intermediate electrode disposed between the focus electrode and the ultimate acceleration electrode, the focus electrode, the ultimate acceleration electrode and the at least one intermediate electrode forming a main lens. The electron gun structure also comprises a voltage application unit for applying to the focus electrode a dynamic voltage increasing in accordance with an increase in a degree of deflection of the electron beams, and applying to the intermediate electrode a voltage obtained by dividing a voltage applied to the ultimate acceleration electrode by means of a voltage dividing resistor. The electron gun structure further comprises at least one cylindrical additional electrode electrically insulatively covering a part of the electrode constituting the electron lens, the at least one cylindrical additional electrode being electrically connected to the intermediate electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.