A two-dimensional position sensor is formed by drive electrodes (52) and sense electrodes (62, 64, 66) both extending in the x-direction and interleaved in the y-direction. The sense electrodes comprise several groups, two of which co-extend in the x-direction over each different portions of extent in...http://www.google.com.au/patents/US7808255?utm_source=gb-gplus-sharePatent US7808255 - Two-dimensional position sensor
