| 摘要 |
PURPOSE:To prevent a damage of an electrode resulting from a plasma discharge, by using a plasma electrode covered with an insulating membrane to protect the electrode material for a cathode system, and utilizing the AD discharge. CONSTITUTION:An upper layer substrate is composed of an upper plate 1, an anode 2, and a phosphor 3, a control substrate is composed of a control cathode 4 and an insulator 5, and a plasma substrate is composed of a protective membrane 7, a plasma electrode 8, and a lower plate 9. When an AD voltage is applied to such a composition and a discharge is started linearly, the gas in the space is ionized into ions and electrons by the discharge, and the electrons are selected and absorbed by the electric signal applied to the control electrode 4. The electrons passing through the control substrate are accelerated, and hit the phosphor 3 of the upper substrate to make the phosphor 3 luminous. By using a plasma electrode which is covered with an insulating membrane to protect the material for the cathode system in such a way, and by utilizing an AD discharge, a damage of the electrode resulting from the discharge can be prevented. |
