Deflection yoke for cathode ray tube

A cathode ray tube comprising:

• a panel having a phosphor film on an inner surface thereof;
• a funnel connected to the panel;
• a neck connected to the funnel;
• an electron gun mounted within the neck to emit electron beams;
• a deflection yoke mounted around an outer circumference of the funnel to deflect the electron beams emitted from the electron gun, wherein the deflection yoke is insulated by a separator;
• a shadow mask mounted within the panel to color-select the electron beams emitted from the electron gun;
• and
• a correction unit located next to the outer circumference of the deflection yoke and fitted to a side portion of the separator to correct a geometric distortion of a deflection magnetic field,
• wherein the correction unit is formed with one of a permanent maguet and an electromagnet, and
• wherein the geometric distortions corrected by the correction unit comprise an NS pincushion distortion, a ½ NS pincushion distortion, an EW pincushion distortion, and a ½ EW pincushion distortion.

A deflection yoke for a cathode ray tube having a funnel, comprising:

• a horizontal deflection coil located next to an outer circumference of the funnel;
• a vertical deflection coil installed at the outer circumference of the funnel, wherein the vertical deflection coil being insulated from the horizontal deflection coil by a separator;
• a correction unit fitted to a side portion of the separator and spaced apart from the horizontal deflection coil to correct a geometric distortion of the vertical and horizontal deflection magnetic fields;
• a first power supply for driving the correction unit;
• and
• a second power supply for driving the deflection yoke, wherein the first power supply is independent of the second power supply,
• wherein the geometric distortions corrected by the correction unit comprise an NS pincushion distortion, a ½ NS pincushion distortion, an EW pincushion distortion, and a ½ EW pincushion distortion.