A touch panel includes a plurality of touch sensing groups. Each of the touch sensing groups includes a central electrode, a plurality of first electrodes and a plurality of second electrodes. The central electrode includes a main body, and has a wavy contour. The first electrodes and the second electrodes are disposed at two sides of the main body along a direction, respectively. Each of the first electrodes includes a first inner edge adaptively spaced from a first edge of the central electrode. Each of the second electrodes includes a second inner edge adaptively spaced from a second edge of the central electrode. One first electrode of the first electrodes overlaps two adjacent second electrodes of the second electrodes in another direction.