Touch panel including steeped sensing lines

A touch panel comprising:

• a plurality of first sensing lines separated from each other, wherein each of the first sensing lines comprises a plurality of first arc segments and a plurality of first straight segments, each of the first straight segments is connected between two adjacent first arc segments, different first arc segments have different radii about a center, and different first arc segments cover different ranges of azimuth about the center;
• and a plurality of second sensing lines separated from each other and intersected with the first sensing lines;
• wherein a number of the second sensing lines is n, a number of the first sensing lines is i, one of the first arc segments of each of the first sensing lines is intersected with two of the second sensing lines, the first arc segment farthest away from the center in each of the first sensing lines is the 1.sup.st first arc segment, one of the first sensing lines is selected as the 1.sup.st first sensing line, and the first sensing lines are sequentially numbered counterclockwise starting from the 1.sup.st first sensing line, of the two second sensing lines intersected with the 1.sup.st first arc segment of the 1.sup.st first sensing line, the second sensing line adjacent to an end of the 1.sup.st first sensing line is used as the 1.sup.st second sensing line, and the second sensing lines are sequentially numbered counterclockwise starting from the 1.sup.st second sensing line, and if the k.sup.th first sensing line is intersected with the m.sup.th second sensing line, then polar coordinates of an intersection point are (r.sub.p, .THETA..sub.m), wherein r.sub.p is a radius of the p.sup.th first arc segment of the k.sup.th first sensing line, p is an integer value of ((m+1)/2)+a−(k−1)n/2i, and .THETA..sub.m is MOD(2b(m−1)/n+2,2)*.pi., wherein b is +1, a=0 when m>2(k−1), a=n/2 when m.ltoreq.2(k−1), .pi. is a radian, and k, p, and m are all positive integers.