Patent ID: 8054261

Claim:
A liquid crystal display comprising: a first panel; a second panel facing and separated from the first panel; a liquid crystal layer interposed between the first and second panels; a plurality of sensor data lines formed on the second panel; a plurality of variable capacitors of which capacitance thereof is varied by pressure, the variable capacitors connected to the sensor data lines; a plurality of reference capacitors connected to the sensor data lines; first reset transistors and second reset transistors connected to the sensor data lines and supplying a first reset voltage and a second reset voltage to the sensor data lines at different times, respectively; a plurality of output transistors connected to the sensor data lines and generating output signals based on sensor data signals flowing through the sensor data lines; and a sensing signal processor supplied with the output signals from the output transistors and generating sensing signals based on the output signals, wherein the variable capacitors comprise first capacitance electrodes formed on the first panel and second capacitance electrodes formed on the second panel, and the sensor data lines function as the second capacitance electrodes; and wherein the first reset transistors apply the first reset voltage to the sensor data lines before the sensing signal processor generates the sensing signals.