In-line electron gun structure for a colour cathode- ray tube

Details In-line electron gun structure for a colour cathode- ray tube In-line electron gun structure for a colour cathode- ray tube

H - Electricity

01

J

313/35.13

H01J 29/58 (2006.01) H01J 29/48 (2006.01) H01J 29/50 (2006.01)

Patent

CA 1215422

13 ABSTRACT: "In-line electron gun structure for a colour cathode ray tube". The effective aperture sizes of thefinal focusing and accelerating electrodes of an in-line electron gun structure for colour 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 intro- duced 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.

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