Patent ID: 6650039
Filing Date: 2003-11-18
Classification: H01J

Abstract:
An electron gun in a color CRT(Cathode Ray Tube), the electron gun having a triode for emitting, controlling, and accelerating R, G, B beams, and main lens forming electrodes for focusing the R, G, B beams emitted from the triode onto a screen, the electron gun comprising:first dynamic quadrupole lens forming electrodes; second dynamic quadrupole lens forming electrodes for providing horizontal and vertical focusing actions to be applied to the R, G, B beams by applying a dynamic voltage thereto; and third dynamic quadrupole lens forming electrodes for generating a focusing action opposite to the first dynamic quadrupole lens forming electrodes, wherein the first dynamic quadrupole lens forming electrodes, the second dynamic quadrupole lens forming electrodes, and the third dynamic quadrupole lens forming electrodes are arranged in order starting from the main lens forming electrodes toward the triode.