Patent attributes
A touch-control method of an LCD is provided. During the idling time in-between the writing periods, the first touch-position sensing step detects the values of liquid crystal capacitances formed between the scan lines and the counter electrode, and detects a scan-line-direction touch position (Y) according to the values of the liquid crystal capacitances formed between the scan lines and the counter electrode. The charging step charges a voltage signal into each of the data lines needed to be detected after the scan-line-direction touch position (Y) is detected. After the voltage signal is charged, the second touch-position sensing step detects the values of liquid crystal capacitance formed between the data lines and the counter electrode, and detects a data-line-direction touch position (X) according to the values of the liquid crystal capacitance formed between the data lines and the counter electrode.
