Patent ID: 7138755

Claim:
A color picture tube apparatus, comprising: a color picture tube having a panel with a phosphor screen formed on an inner surface thereof, a funnel connected to the panel, and an electron gun placed in a neck portion of the funnel; a deflection yoke provided on an outer circumferential surface of the funnel; a convergence and purity unit (CPU) for adjusting color purity and color displacement at a center of a screen, provided on an outer circumferential surface of the neck portion; beam velocity modulation (BVM) coils for modulating a scanning velocity in a horizontal direction of electron beams emitted from the electron gun, provided at a position where the BVM coils are overlapped with the CPU in a tube axis direction; and a ring-shaped ferrite core provided at a position where it is overlapped with the BVM coils in the tube-axis direction, wherein two surfaces vertical to the tube axis of the ring-shaped ferrite core are covered with resin layers.