Touch detection apparatus and method, chip, display device and electronic device

Abstract

The present disclosure relates to a touch detection device and method, a chip, a display device and an electronic device. The device comprises: a charge amplification circuit connected to a sensing point of a touch panel, configured to: receive an excitation signal and a charge of the sensing point, amplify the charge of the sensing point, and output a capacitance change signal of the sensing point; and a capacitance compensation circuit connected to the sensing point of the touch panel, configured to: inject a compensation charge into the sensing point during a level change of the excitation signal, wherein the polarity of the compensation charge is related to the direction of the level change of the excitation signal. The embodiments of the present disclosure can compensate for or even eliminate the influence of the parasitic capacitance of the touch panel, improve the accuracy of touch detection, and save circuit area.

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