Patent ID: 6686709
Filing Date: 2004-02-03
Classification: H01J

Abstract:
A cathode ray tube (CRT), comprising:a panel having a fluorescent surface comprising red R, green G, and blue B fluorescent materials; a funnel fitted to a rear of the panel for maintaining an inner space in vacuum; an electron gun fitted inside of a tubular neck part at a rear of the funnel for emitting electron beams; and a deflection yoke for deflecting the electron beams in a horizontal and/or vertical direction, the deflection yoke including: horizontal and vertical deflection coils for deflecting the electron beams emitted from the electron gun in a horizontal and/or vertical direction; a ferrite core for reducing a loss of magnetic force caused by the horizontal and vertical deflection coils to enhance a magnetic efficiency; and a holder for holding the horizontal deflection coil, the vertical deflection coil, and the ferrite core at required positions, and providing insulation between the horizontal and vertical deflection coils, wherein a screen side of the horizontal and/or vertical deflection coil has a substantially rectangular shape, and the ferrite core is circular or elliptical.