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Apparatus and associated methods

  • US 9,195,350 B2
  • Filed: 10/26/2011
  • Issued: 11/24/2015
  • Est. Priority Date: 10/26/2011
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a first sensor configured to couple capacitively to a stylus when said stylus is in proximity to the first sensor, capacitive coupling between the first sensor and the stylus configured to generate a first touch input signal to enable detection of a first touch input; and

    a second sensor configured to couple capacitively to the stylus when said stylus is in proximity to the second sensor, capacitive coupling between the second sensor and the stylus configured to generate a second touch input signal to enable detection of a second touch inputa layer configured to couple capacitively to the stylus when said stylus is in proximity to the layer, capacitive coupling between the layer and the stylus configured to provide haptic feedback,wherein the layer is positioned adjacent the first sensor, the positioning resulting in capacitive cross-coupling between the first sensor and the layer,wherein the layer is positioned adjacent the second sensor, the positioning resulting in capacitive cross-coupling between the second sensor and the layer,wherein the layer comprises one or more apertures configured to reduce the capacitive cross-coupling; and

    wherein the dimensions, positioning and/or shape of the one or more apertures are chosen such that the capacitive cross-coupling is insufficient to cause the unintentional generation of a second touch input signal when the stylus couples capacitively to the first sensor.

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