Patent ID: 6452321
Filing Date: 2002-09-17
Classification: H01J

Abstract:
A cathode ray tube apparatus comprising:a cathode ray tube including an envelope having a face panel on an inner surface of which a phosphor screen is formed and a funnel joined to the face panel, and an electron gun arranged with a neck of the funnel for emitting electron beams toward the phosphor screen, the funnel having a deflection device-mounting section with a non-circular cross section and a cathode ray tube having a tube axis; and a substantially funnel-shaped deflection device having a first open end on the side of the phosphor screen and a second open end on the side of the neck and mounted on an outer circumferential surface of the deflection device-mounting section of the funnel, wherein the deflection device includes a substantially funnel-shaped core, a plurality of deflection coils for deflecting the electron beams in the horizontal and vertical directions, and a correcting coil for rotating a displayed image about the tube axis, and the whole correcting coil is disposed coplanar with the first open end of the deflection device, is wound about the outer circumference of the first open end of the deflection device and is shaped non-circular and substantially equal in shape to the first open end of the deflection device.