Color cathode ray tube

Details Color cathode ray tube Color cathode ray tube

1998-01-30

1999-11-30

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 313414, H01J 152

Patent

active

059948264

ABSTRACT:
An electron gun comprises a supplementary grid applied with a voltage which dynamically changes in synchronization with a magnetic field generated by a deflection yoke, between a second grid and a third grid. Further, by the second grid, the supplementary grid, and the third grid, an electron is constructed which has an astigmatic aberration in which a focusing force in the horizontal direction is stronger than a focusing force in the vertical direction. The intensity of the astigmatic aberration of the electron lens is dynamically changed by a voltage applied to the supplementary grid.

REFERENCES:
patent: 5399946 (1995-03-01), Son et al.

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