Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1995-01-20
1996-11-12
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
315 15, 315 16, H01J 2950
Patent
active
055743315
ABSTRACT:
An in-line electron gun for a color picture tube has an accelerating electrode portion separated into two or three electrodes in a triode, in which a voltage supplied to respective electrodes is varied and an asymmetrical hole is formed in at least one among the electrodes to form an additional asymmetric lens, thereby preventing degradation of a focus characteristic caused by an abrupt increase of a diverging angle of electron beam in a high current region, degradation in the vertical electron beam due to an influence of a magnetic field of a deflection yoke, change of focusing force induced by voltage variation of a first accelerating/focusing electrode, and degradation of the electron beam owing to collision/repulsion among electrons in the electron beam.
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An Sung-Gi
Cho Sung-Ho
Kim Hyun C.
Kim Won-Hyun
Lee Hee S.
Esserman Matthew J.
Goldstar Co. Ltd.
O'Shea Sandra L.
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