System and method for differential parallel touch sensing

An input device comprising:

• a display;
• a touch sensor integrated with the display and having a sensing area, comprising:
• a plurality of sets of sensor electrodes, each set of sensor electrodes comprising:
• a positive transmitter electrode;
• a negative transmitter electrode;
• a differential pair of receiver electrodes comprising:
• a positive receiver electrode coupled to the positive transmitter electrode;
• a negative receiver electrode coupled to the negative transmitter electrode, wherein the differential pair of receiver electrodes is disposed between the positive transmitter electrode and the negative transmitter electrode;
• a sensor circuit configured to:
• drive the positive transmitter electrode with a positive sensing signal;
• drive the negative transmitter electrode with a negative sensing signal;
• receive resulting signals from the differential pair of receiver electrodes;
• and
• process the resulting signals.

A method for capacitive sensing with a touch sensor, comprising:

• driving a plurality of positive transmitter electrodes with a positive sensing signal;
• driving a plurality of negative transmitter electrodes with a negative sensing signal;
• receiving first resulting signals from a plurality of positive receiver electrodes;
• receiving second resulting signals from a plurality of negative receiver electrodes;
• and
• processing the first resulting signals and the second resulting signals,
• wherein the plurality of positive receiver electrodes and the plurality of negative receiver electrodes form differential pairs, each differential pair comprising a positive receiver electrode of the plurality of positive receiver electrodes and a negative receiver electrode of the plurality of negative receiver electrodes, and wherein the positive receiver electrode is coupled to a positive transmitter electrode of the plurality of positive transmitter electrodes and the negative receiver electrode coupled to a negative transmitter electrode of the plurality of negative receiver electrodes.