In-line electron gun structure for color cathode ray tube having

Details In-line electron gun structure for color cathode ray tube having In-line electron gun structure for color cathode ray tube having

1983-04-21

1988-08-23

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313458, H01J 2962

Patent

active

047663448

ABSTRACT:
The effective aperture sizes of the final focusing and accelerating electrodes of an in-line electron gun structure for color cathode ray tubes are increased by elongating the apertures, expanding the outer edges of the side apertures, and surrounding the apertures with a peripheral raised rim which balances the asymmetry introduced into the apertures by enlargement. Partitions between the aperture may be radiused so their center height is lower than the height at the edges. The raised rim of the final accelerating electrode is generally higher than the raised rim of the focusing electrode.

REFERENCES:
patent: 4318026 (1982-03-01), D'Amato
patent: 4370592 (1983-01-01), Hughes et al.

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