Patent ID: 6664725
Filing Date: 2003-12-16
Classification: H01J

Abstract:
A CRT electron gun havinga cathode for emitting electron toward a screen as a display face, a G2 electrode to which a voltage higher than that of said cathode is applied, a Gm electrode to which a predetermined voltage is applied, and a G3 electrode to which a voltage higher than that of said G2 electrode is applied, wherein at least those three electrodes are provided with an electron-passing opening and are arranged on a same axis in that order from a side of said cathode, and a potential of said cathode is varied to vary an amount of electron to be drawn, characterized in that a lowest potential on said axis in a portion where said Gm electrode exists substantially agrees with a maximum potential in a range where a potential of said cathode varies, and a part of said electrons drawn from said cathode flows into at least one of said G2 electrode and said Gm electrode.