Color picture display tube
US4560898A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Jun 9, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/803
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A deflection color selection system for a single beam channel plate display tube includes, within an envelope 10, a laminated dynode channel plate electron multiplier (16) having channels whose exit apertures are aligned in columns. An apertured extractor electrode (36) is mounted on and electrically insulated from an output face of the electron multiplier (16), the apertures (42) in the extractor electrode (36) being aligned with respective channels. A luminescent screen (14) spaced from the extractor electrode (36) includes patterns of phosphor elements (R, G, B) adapted to luminesce in different colors. A current multiplied electron beam 34 exiting from an aperture in the extractor electrode is deflected onto an associated pattern of phosphor elements by pairs of first (38) and second (40) deflector electrodes insulated electrically from each other and from the extractor electrodes, the first (38) and second (40) deflector electrodes being disposed as pairs between each column of apertures (42) in the extractor electrode (36). All of the first electrodes (38) are interconnected as are all of the second electrodes (40). This electrode arrangement enables good resolution and elect…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.