Patent ID: 7385341

Claim:
A cathode-ray tube apparatus comprising: a face with a phosphor screen formed on an inner surface; a funnel connected to the face; an electron gun housed in a neck of the funnel; a deflection yoke for deflecting an electron beam emitted from the electron gun in a horizontal direction and a vertical direction, provided on an outer circumferential surface of the funnel; a plurality of magnet rings for correcting a convergence, placed in a tube axis direction on an outer circumferential surface of the neck; at least one spacer placed between the magnet rings placed in the tube axis direction; and a velocity modulation coil for modulating a scanning velocity in the horizontal direction of the electron beam, provided so that a position of the velocity modulation coil in the tube axis direction is overlapped with those of the magnet rings, wherein at least one of the spacers is made of only a magnetic substance.