A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading...http://www.google.de/patents/US7714847?utm_source=gb-gplus-sharePatent US7714847 - Capacitive touchpad having dual traces coupled with uneven spaced interlaced sensors
