| 摘要 |
PURPOSE:To output a stable drive signal by providing the 2nd FF storing an output of the 1st flip-flop (FF) synchronously with a data drive control signal and latching a data synchronously with the output signal of the 2nd FF. CONSTITUTION:A data signal DATA is read by a flip-flop (FF) 1 at the trailing of a clock signal CP and outputted as an output signal Q1, which is read in a FF F2 at the next trailing of the clock signal CP and outputted as an output signal Q2. The output signal is read in a FF F3 at the further next trailing of the clock signal CP and outputted as an output signal Q3. A latch pulse as a latch signal LATCH is inputted to synchronize the latch timing of a latch circuit 12 with the change in a liquid crystal drive control signal DRV and a FF F4 reads the H level inputted to the input terminal D synchronously with the trailing of the latch signal LATCH. |
