Touch panel and controlling method of touch panel
The present invention provides a touch panel and a controlling method thereof. The controlling method comprises: during a display period of the touch panel, turning on a bias voltage generation circuit to generate a bias voltage signal, turning on a reverse bias voltage generation circuit to generate a reverse bias voltage signal, turning on a positive voltage generation circuit to generate a positive voltage signal, turning on a negative voltage generation circuit to generate a negative voltage signal, and turning off a modulating voltage generation circuit; during a touch period of the touch panel, turning off the bias voltage generation circuit, the reverse bias voltage generation circuit, the positive voltage generation circuit, and the negative voltage generation circuit, and turning on the modulating voltage generation circuit to generate a modulating voltage signal, wherein the modulating voltage signal is same as a touch sensing signal of the touch panel.
HIMAX TECHNOLOGIES LIMITED
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inventional inventional additional additional
Wei-Song Yaw-Guang
Wang Chang