| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent operation errors in a shift register composed of transistors of the same conductivity types. <P>SOLUTION: A gate of the transistor M2 bringing an output signal Y in a low level is connected to a node β of a second gate signal generator 13A. The output signal Y is fed back to a gate of the transistor M4 in the second gate signal generator 13A to make the transistor M4 charge the node β to a low level in a period when the output signal Y is in a high level. On the other hand, in a period when the output signal Y is in a low level, the transistor M3 in the second gate signal generator 13A repeats to charge the node β to a high level at a predetermined clock cycle. Thus, even if an off-leak current of the transistor M4 is large, operation errors caused by the falling potential of the node β can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT |
