A two-dimensional position sensor comprising a substrate with a sensitive area defined by a pattern of electrodes including electrodes for determining x-position and electrodes for determining y-position. The x-electrodes and y-electrodes generally extend in the x-direction and are interleaved in the...http://www.google.ca/patents/US20070279395?utm_source=gb-gplus-sharePatent US20070279395 - Two Dimensional Position Sensor
