Synaptics Incorporated
SINGLE LAYER CAPACITIVE IMAGING SENSORS

Abstract:

A capacitive sensing layer of an input device includes a substantially rectangular sensor pattern extending in a horizontal direction and in a vertical direction, including first and second electrodes. Each of the first electrodes includes a strip extending in the vertical direction. The first electrodes are separated in the horizontal direction by first gaps. Each of the second electrodes includes a substantially rectangular pad, disposed adjacent to one of the first electrodes, in one of the first gaps. Two of the second electrodes are disposed in each of the first gaps in the horizontal direction. The two of the second electrodes in each of the first gaps are separated by second gaps. A subset of the second electrodes are disposed in each of the first gaps, in the vertical direction. The capacitive sensing layers also includes routing traces of the second electrodes disposed in the second gaps.