Parade Technologies, Ltd.

Tim McCarthy

Denis Ellis

Maksym Prybytko

This application is directed to detecting touch events using a display pixel array. The display pixel array includes display pixels each of which is disposed between a display electrode and a common electrode. For touch sensing, a processing device drives the subset of common electrodes with an integration voltage that varies by a voltage variation at a predetermined slew rate. The processing device also drives a subset of display electrodes corresponding to the subset of common electrodes in a synchronous manner, thereby reducing an impact of parasitic capacitance associated with the subset of common electrodes. Each of the subset of display electrodes is driven with an adjusted display voltage that varies by the voltage variation at the predetermined slew rate. While driving the subsets of common and display electrodes, a capacitive sense signal associated with the subset of common electrodes is measured at an output of a capacitance sense circuit.

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Bandon, Ireland

Tim McCarthy