Patent ID: 9594458
Date: 2017-03-14
CPC Classifications: G06F

Claim:
1. A processing system for a display device having an integrated capacitive sensing device, the processing system configured to couple to a plurality of sensor electrodes and a plurality of conductive electrodes of the display device, the processing system further configured to: drive a first sensor electrode of the plurality of sensor electrodes with a first signal for capacitive sensing; while driving the first sensor electrode of the plurality of sensor electrodes with the first signal for capacitive sensing, drive at least one conductive electrode of the plurality of conductive electrodes with a guard signal, wherein the guard signal comprises a varying voltage signal and is similar to the first signal, wherein each of the plurality of sensor electrodes comprises at least one common electrode of a plurality of common electrodes of the display device, wherein the plurality of common electrodes are driven for display updating and capacitive sensing, and wherein the at least one conductive electrode of the plurality of conductive electrodes comprises one of a source line or a gate line; and while driving the at least one conductive electrode of the plurality of conductive electrodes with the guard signal, electrically float at least one other conductive electrode of the plurality of conductive electrodes, wherein the at least one other conductive electrode of the plurality of conductive electrodes comprises the other one of the source line or the gate line.