Deflection device for use in color television receiver

In a deflection device for use in a color television receiver, which is fitted to a neck portion of a color picture tube having electron guns emitting three electron beams, said electron guns being arranged in a horizontal plane and which comprises a deflection yoke for horizontally and vertically deflecting said three electron beams on a screen and at least a soft magnetic material piece fitted on said deflection yoke, the improvement which comprises a deflection yoke which is so designed as to eliminate mis-convergences MC.sub.1, MC.sub.2, MC.sub.3, MC.sub.4 and MC.sub.7, in the mis-convergence MC.sub.1 the three electron beams being horizontally displaced from each other at both the upper and lower end portions of the vertical or Y axis, in the mis-convergence MC.sub.2, the three electron beams being vertically displaced from each other at both the upper and lower end portions of the Y axis, in the mis-convergence MC.sub.3, the three electron beams being horizontally displaced from each other at both the right and left end portions of the horizontal or X axis, in the mis-convergence MC.sub.4 three electron beams being vertically displaced from each other at both the right and left end portions of the X axis, and in the mis-convergence MC.sub.7 scanning lines of the three electron beams being vertically displaced at intermediate portions between the Y axis and each of said right and left ends of the screen;

• and at least a soft magnetic material piece fitted to an end portion of said deflection yoke nearer to the screen of the color picture tube so as only to eliminate a mis-convergence MC.sub.5 wherein the three electron beams are horizontally displaced from each other at the diagonal end portions of the screen and a mis-convergence MC.sub.6 wherein the three electron beams are vertically displaced from each other at the diagonal end portions of the screen.