COLOR PICTURE TUBE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a device for color picture tube capable of correcting miss- convergence apt to be generated in a flat panel or wide deflection angle color picture tube in a simple manner. SOLUTION: Miss-convergence occurring between the side beams along the longitudinal line of the vertical axis is transformed into the barrel type miss- convergence by forming the vertical deflection magnetic fields generating the vertical deflection coil 11 into a strong barrel distorted magnetic fields, and the barrel type miss-convergence is corrected by the correcting magnetic fields generating a 4-pole coil 7 that flows the vertical deflection currents adjusted in a diode 6.