Color cathode ray apparatus provided with dynamic convergence me

Details Color cathode ray apparatus provided with dynamic convergence me Color cathode ray apparatus provided with dynamic convergence me

1988-05-25

1990-02-13

Wieder, Kenneth

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313428, 313431, 313437, H01J 2951, H01J 2956

Patent

active

049009796

ABSTRACT:
In a color cathode ray apparatus, three electron beams emitted from electron gun assembly are correctly converged on a peripheral region of a peripheral region of a phosphor screen and are weakly converged on a center region of the phosphor screen by static convergence means. The electron beams are also converged by dynamic convergence means so as to correct the weak convergence in accordance with a horizontal deflection of the electron beams. Thus, the electron beams can be correctly converged all over the phosphor screen.

REFERENCES:
patent: 4725763 (1988-02-01), Okuyama et al.

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