ELECTRON GUN FOR CATHODE-RAY TUBE

摘要

The electron gun improves the resolution of color pictures by reducing spherical aberration and improving the focusing characteristics. The electron gun comprises: (A) an external electrode (110) forming the first transit hole (113) of electron beams in a large aperture; (B) an internal electrode (120) forming the second transit hole (123) of electron beams in a large aperture but smaller in the horizontal width (W2) than that of the first transit hole fixed inside of the external electrode.