Patent ID: 6472832
Filing Date: 2002-10-29
Classification: H01J

Abstract:
A cathode ray tube comprising:an electron gun assembly including: an electron beam formation section for forming and emitting at least one electron beam; and a main electron lens section for accelerating the electron beam and focusing the electron beam on a screen; and a deflection yoke for generating a deflecting magnetic field, with which the electron beam emitted from the electron gun assembly is deflected to the screen in a horizontal direction and a vertical direction, said main electron lens section being an electric field expansion type lens including: a focusing electrode applied with a focusing voltage of a first level; an anode applied with an anode voltage of a second level higher than the first level; and at least one intermediate electrode arranged between the focusing electrode and the anode and applied with an intermediate voltage of a third level which is higher than the first level and lower than the second level, said anode including: a first anode; a second anode located closer to the screen than the first anode as viewed in the traveling direction of electron beams; and at least one auxiliary electrode interposed between the first anode and the second anode, said at least one auxiliary electrode and said at least one intermediate electrode being electrically connected to each other.