Serrated input sensing intervals
First Claim
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1. A processing system configured to drive an input device comprising a display device with an integrated sensing device, the processing system comprising:
- a driver module comprising driver circuitry, wherein the driver module is configured to be coupled to a plurality of sensor electrodes and a plurality of display lines, wherein each sensor electrode comprising at least one common electrode of a plurality of common electrodes configured for display updating and capacitive sensing, wherein the driver module is configured for;
driving row selection logic of the input device to select a first display line of the plurality of display lines for display updating during a display update period of a first display frame;
driving a first sensor electrode of the plurality of sensor electrodes for capacitive sensing during a non-display update period of the first display frame; and
driving the row selection logic during a row selection logic refresh period for display updating, wherein the row selection logic refresh period occurs within the non-display update period.
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Abstract
Embodiments of the present disclosure provide a technique for input sensing using an input device having a display device with an integrated sensing device. Input sensing is performed over a long sensing interval to attain narrow-band filtering, and is temporarily suspended for short intervals (within the long sensing interval) to refresh the row selection logic of the display device.
82 Citations
20 Claims
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1. A processing system configured to drive an input device comprising a display device with an integrated sensing device, the processing system comprising:
a driver module comprising driver circuitry, wherein the driver module is configured to be coupled to a plurality of sensor electrodes and a plurality of display lines, wherein each sensor electrode comprising at least one common electrode of a plurality of common electrodes configured for display updating and capacitive sensing, wherein the driver module is configured for; driving row selection logic of the input device to select a first display line of the plurality of display lines for display updating during a display update period of a first display frame; driving a first sensor electrode of the plurality of sensor electrodes for capacitive sensing during a non-display update period of the first display frame; and driving the row selection logic during a row selection logic refresh period for display updating, wherein the row selection logic refresh period occurs within the non-display update period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An input device comprising a display device having a sensing device, the input device further comprising:
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a plurality of sensor electrodes configured for capacitive sensing; a plurality of display lines coupled to row selection logic; a processing system configured to be coupled to the plurality of sensor electrodes and the plurality of display lines, the processing system configured for; driving the row selection logic to select a first display line of the plurality of display lines for display updating during a display update period of a first display frame; driving a first sensor electrode of the plurality of sensor electrodes for capacitive sensing during a non-display update period of the first display frame; and driving the row selection logic during a row selection logic refresh period for display updating, wherein the row selection logic refresh period occurs within the non-display update period. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of input sensing with a display device integrated with a sensing device having a plurality of display lines coupled to row selection logic, a plurality of sensor electrodes, the method comprising:
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driving row selection logic of the display device to select a first display line of the plurality of display lines for display updating during a display update period of a first display frame; driving a first sensor electrode of the plurality of sensor electrodes for capacitive sensing during a non-display update period of the first display frame; and driving the row selection logic during a row selection logic refresh period for display updating, wherein the row selection logic refresh period occurs within the non-display update period. - View Dependent Claims (18, 19, 20)
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Specification