Patent ID: 6351200
Filing Date: 2002-02-26
Classification: H01J

Abstract:
A video display deflection apparatus, comprising:a vertical deflection coil for producing a deflection field to scan an electron beam along a first axis of a display screen of a cathode ray tube; a saddle shaped horizontal deflection coil for producing a deflection field to scan said electron beam along a second axis of said display screen of said cathode ray tube; a separator for mounting said vertical and horizontal deflection coils thereon, said separator having a funnel shaped first part conforming to a shape of a neck of said cathode ray tube and a second part forming a front portion of said separator close to said screen, said first and second parts having substantially different degrees of flare, said horizontal deflection coil including a plurality of winding turns forming a pair of side portions and a front end turn portion, close to said screen, such that a winding corner is formed between one of said side portions and said front end turn portion within a radial angular position ranging between 0 and 30 degrees, said winding corner being disposed on said second part of said separator away from a boundary between said first and second parts in a manner to extend an effective length of said horizontal deflection coil in a direction of said screen to provide raster distortion correction; and a magnetically permeable core for cooperating with said vertical and horizontal deflection coils to form a deflection yoke free of permanent magnets.