ANALOG BUFFER AND ITS DRIVING METHOD, ESPECIALLY INTERCEPTING AN OUTPUT PORT OF A COMPARISON UNIT AND A DATA LINE IN AN INITIALIZATION PERIOD

摘要

PURPOSE: An analog buffer and its driving method are provided to minimize power consumption and to improve transmission rate of a data signal, in driving a data line of a liquid crystal display device. CONSTITUTION: A comparison unit(COMP11) receives an analog signal through the first switch(SW11) and the first capacitor(C11), and it corrects voltage variation of an output signal applied to a line. The second switch(SW12) is connected between an input port and an output port of the comparison unit. The third switch(SW13) is connected between an output port of the comparison unit and a node between the first switch and the first capacitor. And the fourth switch(SW14) is connected between the output port of the comparison unit and the line. The analog buffer is comprised in a data driving unit embedded in a liquid crystal display device.