CPC G06F 3/0446 (2019.05) [G06F 3/0412 (2013.01); G06F 3/0416 (2013.01)] | 17 Claims |
1. A touch sensing circuit comprising:
a touch power circuit configured to supply a driving signal to a readout circuit configured to transmit the driving signal to a touch electrode disposed on a panel; and
a touch control circuit configured to control an amplitude of the driving signal through a control interface for bidirectional communication, which is electrically connected with the touch power circuit, wherein
the touch power circuit comprises an amplifier for adjusting the amplitude of the driving signal,
when a touch sensing value, received from the readout circuit, is within a reference range for a time interval of a pre-configured frame, the touch control circuit is configured to change the amplitude of the driving signal by transmitting a control signal to change a feedback resistance of the amplifier to the touch power circuit through the control interface, and
the control signal transmitted through the control interface between the touch control circuit and the touch power circuit indicates to increase the amplitude of the driving signal.
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