| 摘要 |
A deflection yoke includes a horizontal coil having a modified wire route in the horizontal coil at one or more predetermined points, which are termed herein turning points, in the middle of the coil which is generating the main magnetic field. A deflection yoke includes a horizontal coil with a neck side and a funnel side, and a window defined by a wire route. The window is disposed in the horizontal coil and has a substantially rectangular shape when viewed in cross section. The wire defines an outline of the window. The wire includes a first portion and a second portion. The wire originates at a first predetermined angle on the neck side of the horizontal coil, and splits into the first and second portions at a first turning point. The first portion terminates at a second predetermined angle on the funnel side of the horizontal coil. The second portion turns away from the first portion at an approximately right angle. The second portion includes a second turning point disposed at a third predetermined angle at which second turning point the second portion turns so that the second portion terminates at a fourth predetermined angle on the funnel side. A method is disclosed for controlling convergence error in a deflection yoke. First, a wire in the horizontal coil is split into a first portion and a second portion at a predetermined location along the wire originating at a predetermined winding angle on a neck side of the horizontal coil. Second, a window is created in the horizontal coil. Finally, a wire route is created in the second portion of the split wire that runs perpendicular to the first portion for a predetermined length and runs substantially parallel to the first portion after the predetermined length by turning at a turning point towards a funnel side of the horizontal coil so that the second portion terminates on the funnel side at a predetermined funnel side angle.
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