| 摘要 |
PURPOSE:To eliminate a charging current to an interline electrostatic capacity when a cancel pulse is generated and to reduce power consumption of a display device by making the output end of a driving circuit for generating the cancel pulse in a high impedance. CONSTITUTION:In addition to a TSC signal, an SUS signal, an STB signal and POR signal, an enable(ENA) signal is inputted to control circuits 11 and 11' as a control signal. The driving circuit constituted of the control circuits 11 and 11' and switching circuits 109 and 109' is made to be selective in three kinds of states of the high impedance, a high potential side power-supply voltage VDH and a low potential side power-supply voltage GND by the ENA signal in accordance with an input data signal. And in the case that the cancel pulse is outputted after a sustained pulse is outputted as to an X1 electrode driving waveform, the output end of the driving circuit for the X1 electrode is made to be in the high impedance state by the ENA signal when the cancel pulse is outputted, and output of the driving circuit for an X2 electrode is made to be in a GND state. Thus, the charging current to the interline electrostatic capacity is prevented. |
