Abstract: In one embodiment, a touch sensor includes multiple first electrode lines along a first direction. Each of the first electrode lines includes multiple first electrodes. The touch sensor also includes multiple second electrode lines along a second direction substantially perpendicular to the first direction. Each of the second electrode lines includes one second electrode. The second electrode of each of the second electrode lines is interdigitated with one of the first electrodes of each of the first electrode lines. The first and second electrodes are disposed on one side of a substrate.