Electron gun for color cathode ray tube
US5905332A · kind A · utility
7Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron gun for a color cathode ray tube includes a cathode structure having three electron emitting portions in a field emission array cell. A focus electrode and a final acceleration electrode are sequentially arranged with respect to the cathode structure and form a main lens for focusing electron beams emitted from the three electron emitting portions. The eccentric distance of the electron emitting portions is shorter than the eccentric distance of the electron beam emitting holes in the focus electrode opposite the electron emitting portions. Focus characteristics and convergence characteristics are improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.