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ELECTRICAL CAPACITANCE DETECTION METHOD FOR TOUCH DISPLAY PANEL, ELECTRICAL CAPACITANCE DETECTION CIRCUIT FOR TOUCH DISPLAY PANEL, AND TOUCH DISPLAY PANEL
ELECTRICAL CAPACITANCE DETECTION METHOD FOR TOUCH DISPLAY PANEL, ELECTRICAL CAPACITANCE DETECTION CIRCUIT FOR TOUCH DISPLAY PANEL, AND TOUCH DISPLAY PANEL
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机译：电容检测方法，用于触摸显示面板，触摸显示面板的电容检测电路，以及触摸显示面板
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摘要
A capacitance detection method of a touch display panel, a capacitance detection circuit of a touch display panel, a touch chip and an electronic device are provided. The method includes: receiving a real-time sync signal sent from a display panel, and generating a trigger signal in a period in which a display driving noise is avoided based on the real-time sync signal (SI); generating a sync driving signal in the period in which the display driving noise is avoided based on the received trigger signal, to drive a driving electrode of the touch display panel (S2); and detecting a signal value of a capacitance sensor in the touch display panel in the period in which the display driving noise is avoided based on the received trigger signal (S3). This method is little affected by the display driving operation, and improves the signal-to-noise ratio (SNR) of a finally detected effective signal, thus greatly improving the touch sensitivity.
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