ELECTRON GUN FOR CATHODE-RAY TUBE

PURPOSE:To easily set opposing electrodes and auxiliary electrodes with high density by providing a staircase portion to the side wall of opposing electrode and providing spacers to such staircase portion. CONSTITUTION:A fourth grid 14 is inserted into three reference pins 50a, 50b, 50c. Next, a horseshoe shaped first spacer 81 is placed at the staircase portion of a fourth grid 14 and a horseshoe shaped second spacer 82 is placed on the first spacer 81. Next, the one of auxiliary electrodes 20 is inserted in such a way that an aperture is aligned with the staircase portion 801 of horseshoe shaped spacer 82, and the one auxiliary electrode is placed thereon. Next, a horseshoe shaped spacer 83 of the second staircase portion is placed so that it is aligned with the aperture of electrode and the first horseshoe shaped spacer 84 is placed thereon. Thereafter, these spacers are inserted so that the staircase portion of third grid 13 is aligned with the horseshoe shaped spacer. After pressurization, an electrode support rod which is partly thermally fused is bonded with pressure and is then hardened by cooling. Thereafter, first the first spacers 81, 84 are pulled and then spacers 82, 83 are pulled.