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Adjustable shield electrode arrangement for capacitive touch sensor array

  • US 9,958,997 B2
  • Filed: 09/18/2014
  • Issued: 05/01/2018
  • Est. Priority Date: 09/25/2013
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a plurality of distinct capacitive sensor electrodes distributed over a sensing area;

    conductive traces connected to respective ones of the plurality of distinct capacitive sensor electrodes;

    one or more first shield electrode portions, positioned on a first side of the sensing area to overlap, in the sensing area, at least some of the conductive traces, and one or more second shield electrode portions, positioned on the first side of the sensing area to overlap, in the sensing area, at least some of the capacitive sensor electrodes, wherein at least some of the one or more second shield electrode portions overlap, in the sensing area, the capacitive sensor electrodes but not the conductive traces; and

    circuitry configured to switch the apparatus between a first mode in which the one or more first shield electrode portions are operated as a single electrode independently of the one or more second shield electrode portions and a second mode in which the one or more first shield electrode portions and the one or more second shield electrode portions are operated as a single electrode.

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