Method of manufacturing color cathode ray tube apparatus

Details Method of manufacturing color cathode ray tube apparatus Method of manufacturing color cathode ray tube apparatus

1991-03-06

1993-01-05

Seidel, Richard K.

Electric lamp or space discharge component or device manufacturi

Process

With testing or adjusting

445 6, H01J 942, H01J 944

Patent

active

051765560

ABSTRACT:
Magnetization of a magnetic member used for correcting the static convergence and color purity of a color cathode ray tube apparatus must be performed in consideration of the influences of geomagnetism. A magnetization unit used for magnetizing the magnetic member changes the state of geomagnetism around the neck of the apparatus. However, the magnetization unit can establish the same state of geomagnetism as that obtained when the magnetization unit is not arranged. This allows accurate correction of the static convergence and the color purity.

REFERENCES:
patent: 4211960 (1980-07-01), Barten et al.
patent: 4578661 (1986-03-01), van Rijsewijk et al.
patent: 4608516 (1986-08-01), Oki
patent: 4662853 (1987-05-01), Van Veldhoven
patent: 5017832 (1991-05-01), Takita

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