Electron gun for color picture tube device.

摘要

An electron gun for color-picture tube device comprises a final accelerating electrode (9) and a focusing electrode (8a, 8b) divided into plural electrode units in the axial direction of the tube. A first focusing electrode unit (8b) adjacent to the final accelerating electrode (9) is connected to a second focusing electrode unit (8a) adjacent to the first focusing electrode unit (8b) through a resistor (11). A focusing voltage being changed in synchronous with the deflection of an electron beam is applied to the first focusing electrode unit (8b). The resistor (11) is used for removing the a.c. components from the focusing voltage. Then, the removed focusing voltage is applied to the second focusing electrode (8a). For the electron beam deflected on the peripheral part of the screen, a quadrupole lens is formed. On the first focusing electrode unit side opposite to the second focusing electrode unit are formed first electron beam path holes (13) whose major axes extend horizontally. On the second focusing electrode unit side opposite to the first focusing electrode unit are formed second electron beam path holes (12) whose major axes extend vertically. As a result, the quadrupole lens serves to suppress a halo portion.