Deflection yoke having first coil parts for correction of cross-

Details Deflection yoke having first coil parts for correction of cross- Deflection yoke having first coil parts for correction of cross-

1997-02-25

1998-11-17

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313440, 313431, 335213, 335299, H01J 2970

Patent

active

058380990

ABSTRACT:
This invention provides an improved deflection yoke of a self-convergence system for deflecting electron beams of a color CRT with in-line electron guns for emitting the electron beams, capable of preventing both a vertical misconvergence of R/B lines and a cross-misconvergence at a low cost. The deflection yoke includes at least a pair of saddle type horizontal deflection coils. Each of the saddle type horizontal coils has two main coil sections divided by a window at a center thereof, a front rim forming a front mouth, a rear rim forming a rear mouth and, at least, a first split-winding section nearby one of the front and rear rims. Further, a second split-winding section is provided in the respective two main coil sections in a rear half of the respective two main coil sections. The second split-winding section is divided into two parts, a first coil part positioned close to the window and a second coil part positioned remote from the window, by a small opening. The first coil part has a bent part being bent toward the window to define the small opening.

REFERENCES:
patent: 4039988 (1977-08-01), Van Der Heijde
patent: 4431940 (1984-02-01), Habraken et al.
patent: 5121028 (1992-06-01), Milili
patent: 5506469 (1996-04-01), Vink et al.

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