Deflection yoke device
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKenichiro Taniwa, Katsuyo Iwasaki, Takahiro Yoshinaga
Life of this patent
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Abstract
A deflection yoke device includes a deflection yoke for deflecting electron beams in horizontal and vertical directions, the electron beams being emitted from an electron gun of a color cathode ray tube; coma correcting coils positioned on an electron gun side of the deflection yoke so as to be opposed to each other in such a manner that the electron beams pass therebetween; and a pair of cores around which the coma correcting coils are wound, wherein a sliding mechanism is further provided for allowing each of the coma correcting coils to be slidable with respect to the corresponding core. Therefore, a misconvergence can be corrected by a simplified configuration without reducing a sensitivity of the coma correcting coils.
Claims3
A deflection yoke device comprising:
- a deflection yoke for deflecting electron beams in horizontal and vertical directions, the electron beams being emitted from an electron gun of a color cathode ray tube;
- coma correcting coils positioned on an electron gun side of the deflection yoke so as to be opposed to each other in such a manner that the electron beams pass therebetween;
- and
- a pair of cores around which the coma correcting coils are wound,
- wherein each of the cores is formed in a shape of U,
- the comma correcting coils are wound around respective tubular shaped bobbins and are positioned at bottom portions or both leg portions of the U-shaped cores, and
- the inside diameters of the bobbins and the outside diameters of the U-shaped cores are set to dimensions such that their positions relative to each other can be fixed by friction allowing each of the bobbins to be slidable with respect to the corresponding core and to maintain the relative positions of the bobbins with only the friction force.
A deflection yoke device comprising:
- a deflection yoke for deflecting electron beams in horizontal and vertical directions, the electron beams being emitted from an electron gun of a color cathode ray tube;
- coma correcting coils positioned on an electron gun side of the deflection yoke so as to be opposed to each other in such a manner that the electron beams pass therebetween;
- and
- a pair of cores around which the coma correcting coils are wound,
- wherein each of the cores is formed in a shape of U,
- the coma correcting coils are positioned at bottom portions or both leg portions of the U-shaped cores, and
- a sliding mechanism is provided for allowing each of the coma correcting coils to be slidable in an axis direction of the core, and to be movable rotatably in a direction such that an angle of the coma correcting coil with respect to the axis of the core varies.
Dependencies are inferred from the claim text.