Capacitive touch sensing with reduced ambient light interference

An electronic device comprising:

• an energy storage device;
• communication circuitry;
• and
• a touch screen including:
• a display;
• a plurality of touch electrodes;
• one or more light detectors;
• and
• a plurality of chiplets configurable for light sensing operation using the one or more light detectors or touch sensing operation using the plurality of touch electrodes;
• and
• processing circuitry coupled to the plurality of chiplets, the processing circuitry programmed to, in a first mode of touch sensing operation:
• in accordance with a determination that light detected by the one or more light detectors coupled to one or more first chiplets of the plurality of chiplets configured for the light sensing operation meets one or more first criteria, the one or more first criteria including a first criterion that is satisfied when the light is greater than a first light threshold, discard touch sensing results detected at the plurality of touch electrodes coupled to one or more second chiplets of the plurality of chiplets configured for the touch sensing operation.