Patent ID: 9329731
Filing Date: 2016-05-03
CPC Classification: G06F

Claim Text:
1. A method of operating a capacitive input device, wherein said capacitive input device comprises: first and second pluralities of sensor electrodes disposed in a first region of a substrate, wherein said first region is configured to overlap a display screen; at least one routing trace disposed in a second region of said substrate and ohmically coupled to a sensor electrode of one of said first and second pluralities of sensor electrodes and also to a processing system, wherein said second region comprises a non-display screen overlapping portion of said substrate; and a compensation trace disposed in said second region of said substrate and ohmically coupled to said processing system, said compensation trace being substantially parallel and proximate to said at least one routing trace and having substantially the same length along a side edge of said first region as said at least one routing trace, wherein said compensation trace is not ohmically coupled to any sensor electrode located in said first region; and said method comprising: when performing transcapacitive sensing with said capacitive input device, driving a voltage on said compensation trace; and when performing absolute capacitive sensing with said capacitive input device: receiving signals on said compensation trace to measure a capacitance related to an input object in said second region; and utilizing said received signals to compensate for sensitivity of said at least one routing trace to said input object in said second region.