Patent ID: 7006072

Claim:
A data-driving apparatus for a liquid crystal display, comprising: a first multiplexor array applying input pixel data on a time-division basis, the first multiplexor array including at least n first multiplexors and performing time-division on the input pixel data, so that the input pixel 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 time-divided pixel data into 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 pixel voltage signals to the time-divided data lines; 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 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 pixel voltage signals in response to the polarity control signal to input the pixel voltage signals to the demultiplexor array.