Touch sensing method

A touch sensing method is used for a touch panel and includes the steps: firstly, receiving a plurality of sensed values for a plurality of sensing points, and calculating a plurality of sensing differences according to the sensed values; secondly, determining a touch threshold according to at least one (such as a maximum) of the sensing differences; and thirdly, comparing the sensing differences with the determined touch threshold, and judging a coordinate of the touched sensing point according to the comparison result.