| 摘要 |
<p>PROBLEM TO BE SOLVED: To simplify the structure of an amplifier to be addressed by providing a grid suitable to be successively addressed and connecting a return electrode suitable to independently and simultaneously address thereto through a resistance element. SOLUTION: Each control amplifier 21 is connected between grid lines 14 corresponding to a high address voltage +Vg so as to be independently and successively addressable. Each transistor P is controlled by a 2-state signal C, and the grid line 14 is addressed when the signal C is in a potential sufficiently lower than the potential +Vg for ON of the corresponding transistor P. Therefore, the not-addressed grid line 14 is left as it is in a floating potential seen from the control amplifier 21. Each grid line 14 is connected to an extremely thin conductor 23 biased to a low potential -Vg through a resistance area 22, so that each grid liner 14 is returned to the potential sufficiently low to prevent the electron emission by the grid line 14 at the end of address by this resistance area 22.</p> |
