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Active stylus ring electrode

  • US 10,025,401 B2
  • Filed: 09/08/2015
  • Issued: 07/17/2018
  • Est. Priority Date: 09/08/2015
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a base formed of a non-conductive material;

    a ring electrode formed of a conductive material and encircling the base;

    a ground ring formed of the conductive material and encircling the base and separated from the ring electrode by a first distance; and

    a ground plate formed of a second conductive material and separated from the ring electrode by a second distance;

    wherein the ring electrode is connected to a drive circuitry, the ground ring is connected to a reference potential, and the ground plate is connected to the reference potential.

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