Patent ID: 7180497

Claim:
A data driving apparatus for a liquid crystal display, comprising: a multiplexor part having x multiplexors for performing a time-division of 2n input pixel data to output the time-divided pixel data, n being a positive integer and x being a positive integer less than 2n; a digital to analog converter part having x digital to analog converters for converting the time-divided pixel data from the demultiplexor part into pixel voltage signals; a demultiplexor part having x demultiplexors for selectively supplying the pixel voltage signals from the digital to analog converter part to a plurality of output lines of the demultiplexor part; and a sampler and holder part having 2n samplers and holders for sampling and holding the pixel voltage signals from the demultiplexor part to substantially simultaneously output the sampled and held pixel voltage signals to 2n data lines of the liquid crystal display.