| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that power consumption in the entire shift register circuit increases since through-current flows in a circuit in each transfer operation at each transfer stage. <P>SOLUTION: In a shift register circuit that performs transfer operation with each output of the register of a previous stage and a subsequent stage (transfer stages) as inputs IN1 and IN2, a gate potential of a MOS transistor Qp15 is set to a VDD potential, and a gate potential of a MOS transistor Qp16 is set to a VSS potential by the action of a bootstrap state confirmation circuit 22 when an output OUT(n-1) of the previous stage (n-1) is given as the input IN1. In the state other than the bootstrap state, the gate potential of the MOS transistor Qp15 is set to the VSS potential, and the gate potential of the MOS transistor Qp16 is set to the VDD potential by the action of an initial state confirmation circuit 21 when an output OUT(n+1) of the subsequent stage (n+1) is given as the input IN2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
