Patent ID: 8232972

Claim:
A touch position detector of a capacitive touch panel, comprising: a plurality of capacitive sensors for sensing a touch object; a negative capacitance compensation unit coupled to the capacitive sensors, for compensating a basic capacitance of the capacitive sensors and obtaining a change of capacitance; an analog/digital converter (ADC) coupled to the negative capacitance compensation unit, for converting the change of capacitance to a digital signal; and a micro controller unit coupled to the ADC, for detecting a position of the touch object according to the change of capacitance; wherein the negative capacitance compensation unit comprises: a transducer for converting the sensing capacitance to a measuring signal; a normalized negative compensation unit for generating a corresponding feedback signal according to the basic capacitance of the capacitive sensors; and an adder for summing the measuring signal and the feedback signal to obtain the change of capacitance of the capacitive sensors.