CPC G06F 3/04184 (2019.05) [G06F 3/0441 (2019.05); G09G 3/20 (2013.01); G09G 2320/02 (2013.01)] | 18 Claims |
1. A touch control chip, comprising:
a driving circuit configured to output a driving signal to a touch control layer of a screen, wherein there is an overlap between a period when the driving circuit outputs the driving signal and a display sensitive interval of a display layer of the screen, wherein the display sensitive interval comprises a pixel update interval of the display layer, and the pixel update interval is the time interval for a pixel in the display layer to receive a data signal; and
a control circuit configured to, during the period when the driving circuit outputs the driving signal, adjust a value of a driving impedance of the driving circuit in the display sensitive interval of the display layer to be greater than a value of the driving impedance in a time interval outside the display sensitive interval, so that a slope of a flipping edge of the driving signal in the display sensitive interval is smaller than a slope of the flipping edge of the driving signal in the time interval outside the display sensitive interval, wherein a peak amplitude of the driving signal in the display sensitive interval and in the time interval outside the display sensitive interval are equal.
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