Patent ID: 8436831

Claim:
A capacitive touch detection system comprising: a capacitive touch panel including a plurality of input terminals and a plurality of output terminals; and a detection control circuit including a scanning signal transmitting module and a detection signal receiving and waveform shaping module, the scanning signal transmitting module being electrically coupled to the input terminals for providing a scanning voltage signal to the input terminals, the detection signal receiving and waveform shaping module being electrically coupled to the output terminals for receiving and processing a plurality of detection signals outputted from the respective output terminals to produce a plurality of processed detection signals; wherein the detection signal receiving and waveform shaping module comprises a receiver for receiving the detection signals and an impedance-matching network for performing a waveform shaping operation applied to the detection signals thereby producing the plurality of processed detection signals, the impedance-matching network comprises a plurality of RC circuits independent from one another, a terminal of each of the RC circuits is electrically coupled to a predetermined potential, the other terminal of each of the RC circuits is electrically coupled to receive a corresponding one of the detection signals, each of the RC circuits comprises a resistor and a capacitor, and a resistance value and a capacitance value of each of the RC circuits are relevant with a ratio of a voltage amplitude of the corresponding one of the detection signals to a voltage amplitude of the corresponding one of the processed detection signals under the situation of the capacitive touch panel being untouched.