Patent ID: 7265485

Claim:
An electron gun assembly for a cathode ray tube, comprising: a cathode for emitting an electron beam; a plurality of electrodes mounted in a row with predetermined gaps therebetween, the plurality of electrodes including a focus electrode which receives a focus voltage, and an anode electrode which surrounds a part of the focus electrode and receives an anode voltage; a support to which the electrodes are fixed so as to align the electrodes in a sequential configuration; and a first auxiliary support mounted on an outer circumference of the focus electrode for securing the focus electrode to the support; wherein the focus electrode includes an intermediate aperture section, a small aperture section, and a large aperture section formed sequentially in a direction away from the cathode, a diameter difference between the intermediate aperture section and the small aperture section being greater than a thickness of the focus electrode; wherein the anode electrode includes a large aperture section and a pair of second auxiliary supports provided on an end of the large aperture section of the anode electrode closest to the cathode and extending in a direction toward the cathode while maintaining a distance between each other that is smaller than the inner diameter of the large aperture section; and wherein a combined width of the focus electrode and the first auxiliary support is less than an inner diameter of the large aperture section of the anode electrode; wherein each second auxiliary support comprises a bottom section that extends toward an inner area of the large aperture section of the anode electrode, a supporting section that extends from the bottom section toward the cathode, and a fixing section that protrudes from the supporting section so as to be fixed to the support; and wherein the fixing section comprises a pair of wing sections provided uniformly and extending in a lengthwise direction of the support, and inserting sections that are bent toward each other on distal ends of the wing sections.