| 摘要 |
PURPOSE:To provide an excellent image without deformation in waveform by equalizing the electrostatic capacitor between one of deflexion electrode of charge beam diflection means and another adjacent electrode and the electrostatic capacity between the other difflection electrode and another adjacent electrode. CONSTITUTION:Electrostatic capacity of a horizontal deflection electrode 20 opposite to vertical deflection electrodes 21, 21a forming a charge beam deflection means and electrostatic capacity of a horizontal deflection electrode 20a opposite to the electrodes 21, 21a are made equal. Electrostatic capacity of the electrode opposite to the electrodes 20, 20a and electrostatic capacity of the electrode 21a opposite to the electrodes 20, 20a are also made equal. When horizontal deflection waveform is for example applied to the electrodes 20, 20a, therefore, voltage waveform induced by the electrode 21 (21a) are made opposite with the same amplitude and cancel with each other to thereby give no change in the vertical deflection waveforms. It is thus possible to have an excellent image with a reduced distortion in waveforms. |
