Patent ID: 6172451
Filing Date: 2001-01-09
Classification: H01J

Abstract:
A deflection yoke structure with horizontal deflection coils, and capable of correcting vertical pincushion distortion, said defection yoke structure comprising:a deflection yoke having an outer circumference, an inner circumference, and a plurality of partition pieces on said inner circumference extending toward the center of said deflection yoke to define a plurality of winding grooves therebetween;vertical deflection coils having a wire-wound form of a section winding type located in a winding groove on the inner circumference of said deflection yoke;correcting coils in each winding groove for correcting a vertical pincushion distortion from said vertical deflection coils, which correcting coils are provided in addition to and radially adjacent to said vertical deflection coils, said correcting coils being located radially closer to said inner circumference within each section of said deflection yoke than that of said vertical deflection coils;wherein said correcting coils for correcting a vertical pincushion distortion have such a wire-wound form as to generate a magnetic field having a pattern substantially equal to that of said vertical deflection coils.