Patent ID: 7746310

Claim:
A data-driving apparatus for a liquid crystal display, comprising: a first multiplexor array performing a time-division on input pixel data and supplying the time-divided data and alternately changing a supplying sequence of the time-divided pixel data for a predetermined period, wherein the input data include at least n time-divided pixel data (wherein n is an integer); a digital-to-analog converter array including at least (n+1) positive and negative digital-to-analog converters converting the at least n time-divided pixel data into at least n time-divided pixel voltage signals, and the positive digital-to-analog converter and the negative digital-to-analog converter being alternately arranged; a demultiplexor array performing time-division on data lines and supplying the at least n time-divided pixel voltage signals to the time-divided data lines and alternately changing a supplying sequence of the at least n time-divided pixel voltage signals for the predetermined period; a second multiplexor array determining a path of the at least n time-divided pixel data in response to a polarity control signal to input the at least n time-divided pixel data to the at least n positive and negative digital-to-analog converters among the at least (n+1) positive and negative digital-to-analog converters; and a third multiplexor array determining a path of the at least n time-divided pixel voltage signals in response to the polarity control signal to input the at least n time-divided pixel voltage signals to the demultiplexor array, wherein the predetermined period includes at least one of at least one horizontal period and at least one frame.