Patent ID: 8502796

Claim:
A touch sensor comprising: a substrate comprising a first end and a second end opposite the first end; a first electrode line disposed on a first side of the substrate, the first electrode line along a first direction, the first direction extending between the first end and the second end, the first electrode line comprising a plurality of first electrodes substantially perpendicular to the first direction, a set of the first electrodes decreasing in length along the first direction; a second electrode line disposed on the first side of the substrate, the second electrode line substantially parallel to the first direction, the second electrode line comprising a plurality of second electrodes substantially perpendicular to the first direction, a set of the second electrodes increasing in length along the first direction; and a third electrode line disposed on the first side of the substrate, the third electrode line at an angle to the first direction, the third electrode line comprising: a plurality of third electrodes substantially perpendicular to the first direction, a set of the third electrodes decreasing in length along the first direction, the third electrodes being interdigitated with the plurality of first electrodes of the first electrode line; and a plurality of fourth electrodes substantially perpendicular to the first direction, a set of the fourth electrodes increasing in length along the first direction, the fourth electrodes being interdigitated with the plurality of second electrodes of the second electrode line.