Liquid crystal display device having improved touch screen

摘要

A liquid crystal display having a touch screen includes a plurality of sensing data lines formed on a display panel, a plurality of variable capacitors connected to the sensing data lines and having capacitance that varies with a pressure, a plurality of reference capacitors connected to the sensing data lines, and a plurality of sensing signal output units each connected to the sensing data lines for generating output signals on the basis of sensing data signals that flow through the sensing data lines. The sensing signal output units change the amount of current based on the sensing data signals to reduce current corresponding to the output signals.