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Side sensing for electronic devices

  • US 9,798,399 B2
  • Filed: 06/02/2014
  • Issued: 10/24/2017
  • Est. Priority Date: 06/02/2014
  • Status: Active Grant
First Claim
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1. An input device, comprising:

  • a first sensing region substantially overlapping a user input area, the first sensing region including;

    a first plurality of sensor electrodes configured to sense objects in the first sensing region, anda first plurality of routing traces ohmically coupled to the first plurality of sensor electrodes; and

    a second sensing region adjacent to the first sensing region, the second sensing region including;

    a second plurality of sensor electrodes configured to sense objects in the second sensing region, the second plurality of electrodes comprising a plurality of floating electrodes, and a plurality of coupling electrodes capacitively coupled to the plurality or floating electrodes, anda second plurality of routing traces ohmically isolated from the plurality of floating electrodes, ohmically coupled to the plurality of coupling electrodes, and capacitively coupled to the plurality of floating electrodes via the plurality of coupling electrodes, wherein the second plurality of routing traces comprise a subset of the first plurality of routing traces; and

    a processing system communicatively coupled to the first plurality of sensing electrodes via the first plurality of routing traces and operably coupled to the plurality of floating electrodes via the second plurality of routing traces, wherein the processing system is configured to;

    multiplex the subset of the first plurality of routing traces between the first sensing region and the second sensing region in order to receive capacitively coupled input from the first sensing region and the second sensing region.

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