Patent ID: 6144151
Filing Date: 2000-11-07
Classification: H01J

Abstract:
A color cathode ray tube comprising:at least an electron gun, constituted by a cathode for forming a plurality of electron beams arranged in line and a plurality of electrodes, and a fluorescent screen, whereinsaid plurality of electrodes including an anode are arranged in the axial direction of the tube and have dissimilar potentials, and a main lens is constituted of said anode and another electrode neighboring said anode;said electrode neighboring said anode includes at least two division electrodes having the same potential arranged with a gap in the axial direction of the tube, and one of the division electrodes is opposed to said anode and has, in the opposed surface thereof, a single opening for passing said plurality of electron beams in common; andsaid one division electrode opposed to said anode has a length in the axial direction of the tube that is from about 1.0 to about 1.6 times as great as the diameter of said single opening in a direction at right angles with the in-line direction.