Method of Reducing Noises on a Touch Panel

A method of reducing touch panel noise, the method comprising:

• performing a process comprising:
• determining a synchronous reference signal by at least one type of clock signal utilized on a display panel;
• utilizing a sensor on a touch panel corresponding to a test position of the display panel to sample a signal at the test position in a first predetermined period for generating a plurality of sample signals;
• determining a maximum sample signal having maximum magnitude and a minimum sample signal having minimum magnitude of the plurality of sample signals;
• determining magnitude difference of the maximum sample signal and the minimum sample signal to generate a noise estimation signal;
• comparing magnitude of the noise estimation signal and magnitude of a current minimum noise estimation signal to generate a comparison result;
• determining magnitude of the current minimum noise estimation signal according to the comparison result;
• and
• determining and recording appearance moment of the current minimum noise estimation signal according to phase difference of the current minimum noise estimation signal relative to the synchronous reference signal and appearance moment of the synchronous reference signal;
• performing the process iteratively with a second predetermined period as a time interval until a third predetermined period ends, wherein the third predetermined period covers a plurality of the first predetermined periods and a plurality of the second predetermined periods;
• and
• driving a plurality of data lines of the display panel according to the synchronous reference signal and the appearance moment of the current minimum noise estimation signal for transmitting data to the display panel.