Abstract: Anti-noise performance is a key issue for the implementation of the projected capacitive touch-panel detection circuit. Based on an analysis of driving and sensing methods, a high-precision drive and detection method for projected capacitive touch panel is presented in this paper. Combining both the multiple electrode drive and the IQ(in-phase quadrature) demodulation method for touch sensing, an appropriately selected driving matrix can be designed to significantly reduce the noise aroused by the touch sensor system. In addition, the IQ demodulation method can be used to eliminate completely the phase delays caused by transmission paths. The results indicate that the proposed method can be used to design a high-performance controller chip for capacitive touch-panel detection circuit with a low cost.