Color picture display tube

Details Color picture display tube Color picture display tube

1983-06-09

1985-12-24

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Secondary emissive electrode

313105CM, 313103CM, H01J 3148

Patent

active

045608989

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 electrical correction of misalignment errors between the electron multiplier (16) and the screen (14).

REFERENCES:
patent: 4023064 (1977-05-01), Schagen et al.
patent: 4227115 (1980-10-01), Elshof et al.
patent: 4427918 (1984-01-01), Lipp
patent: 4482836 (1984-11-01), Washington et al.

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