Color cathode-ray tube
US6163104A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/701
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The color cathode-ray tube comprises a glass bulb, a shadow mask, a deflection yoke, and an electron-beam shifting device. The glass bulb comprises a face-plate with stripe-like phosphors for a plurality of colors formed on its inner face by a printing method, a funnel portion connected to the rear part of the face-plate, and a neck portion formed at the rear of the funnel portion. Inside the neck portion, an inline electron gun is provided for emitting electron beams. The shadow mask comprises a plurality of openings disposed corresponding to the stripe direction of the phosphors for each color on the face-plate. The deflection yoke is provided on the peripheral surfaces of the funnel portion and the neck portion. The electron-beam shifting device is provided on the peripheral surface of the neck portion for shifting the deflection center of the electron beams in the inline-alignment direction of the electron beams. The phosphors are formed by the printing method, thus reducing the costs. Furthermore, the electron-beam shifting device is provided, thus ensuring accurate color reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.