Electron gun for cathode ray tube

An electron gun for a cathode ray tube, comprising:

• a cathode for radiating electron beams:
• a scanning velocity modulation coil for synchronizing the electron beams with an image signal;
• a focus electrode including first and second sub-electrodes disposed with a gap through which a magnetic field generated by the scanning velocity modulation coil passes;
• a plurality of grid electrodes with said focus electrode for controlling the electron beams radiated from said cathode;
• a support for aligning and supporting said grid electrodes;
• and
• a shield electrode electrically connected to said first and second sub-electrodes to protect from infiltration of an outer electric field, said shield electrode comprising plural intermediate electrodes disposed in the gap between said first and second sub-electrodes and electrical connecting means for electrically connecting said intermediate electrodes to said first and second sub-electrodes. said intermediate electrodes being spaced away from each other,
• further comprised of said intermediate electrodes being on the support at a distance within a range of about 0.5 to 1.0 millimeters between each one of said intermediate electrodes.

An electron gun for a cathode ray tube, comprising:

• a cathode for radiating electron beams;
• a scanning velocity modulation coil for synchronizing the electron beams with an image signal;
• a focus electrode including first and second sub-electrodes disposed with a gap through which a magnetic field generated by the scanning velocity modulation coil passes;
• a plurality of arid electrodes with said focus electrode for controlling the electron beams radiated from said cathode;
• a support for aligning and supporting said grid electrodes;
• and
• a shield electrode electrically connected to said first and second sub-electrodes to protect from infiltration of an outer electric field, said shield electrode comprising plural intermediate electrodes disposed in the gap between said first and second sub-electrodes and electrical connecting means for electrically connecting said intermediate electrodes to said first and second sub-electrodes. said intermediate electrodes being spaced away from each other,
• further comprised of a thickness of said intermediate electrodes proximal to said first sub-electrode on the basis of a midpoint of the gap being greater than the thickness of said intermediate electrodes proximal to said second sub-electrode.

An electron gun for a cathode ray tube, comprising:

• a cathode for radiating electron beams;
• a scanning velocity modulation coil for synchronizing the electron beams with an image signal;
• a focus electrode including first and second sub-electrodes disposed with a gap through which a magnetic field generated by the scanning velocity modulation coil gasses;
• a plurality of arid electrodes with said focus electrode for controlling the electron beams radiated from said cathode;
• a support for aligning and supporting said grid electrodes;
• and
• a shield electrode electrically connected to said first and second sub-electrodes to protect from infiltration of an outer electric field, said shield electrode comprising plural intermediate electrodes disposed in the gap between said first and second sub-electrodes and electrical connecting means for electrically connecting said intermediate electrodes to said first and second sub-electrodes. said intermediate electrodes being spaced away from each other.
• further comprised of a gap between said intermediate electrodes proximal to said first sub-electrode being less than the gap between said intermediate electrodes proximal to said second sub-electrode.

An electron gun, comprising:

• a focus electrode including first and second sub-electrodes disposed with a gap through which a magnetic field generated by a scanning velocity modulation coil passes;
• and
• a shield electrode electrically connected to said first and second sub-electrodes to protect from infiltration of an outer electric field, said shield electrode comprising a plurality of intermediate electrodes disposed in the gap between said first and second sub-electrodes and an electrical connecting unit electrically connecting said intermediate electrodes to said first and second sub-electrodes, said intermediate electrodes being spaced apart from each other,
• further comprised of a thickness of said intermediate electrodes proximal to said first sub-electrode on the basis of a midpoint of the gap being greater than the thickness of said intermediate electrodes proximal to said second sub-electrode.