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Switchable area enhancement for flexible capacitive sensing

  • US 9,557,860 B2
  • Filed: 08/22/2013
  • Issued: 01/31/2017
  • Est. Priority Date: 08/22/2013
  • Status: Active Grant
First Claim
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1. An input device comprising:

  • a plurality of sensor electrodes;

    a first plurality of buses selectively coupled to the plurality of sensor electrodes;

    a second plurality of buses ohmically separated from the first plurality of buses, the second plurality of buses selectively coupled to the sensor electrodes;

    a plurality of switching elements, wherein each switching element in the plurality of switching elements is paired with a sensor electrode in the plurality of sensor electrodes, and wherein a first switching element in the plurality of switching elements is operable to couple the sensor electrode to either a first bus in the first plurality of buses or a second bus in the second plurality of buses; and

    a processing system coupled to the first plurality of buses and coupled to the second plurality of buses, the processing system configured to;

    drive signals with one or more buses in the first plurality of buses when the one or more buses in the first plurality of buses are selectively coupled to the plurality of sensor electrodes, anddrive signals with one or more buses in the second plurality of buses when the one or more buses in the second plurality of buses are selectively coupled to the plurality of sensor electrodes.

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