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Electronic device having a tuned resonance haptic actuation system

  • US 10,556,252 B2
  • Filed: 12/19/2017
  • Issued: 02/11/2020
  • Est. Priority Date: 09/20/2017
  • Status: Active Grant
First Claim
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1. An electronic device, comprising:

  • an enclosure;

    a display positioned with the enclosure and defining a front face of the electronic device; and

    a haptic actuator positioned within the enclosure and comprising;

    a housing comprising a wall having a thickness between about 100 microns and about 500 microns;

    a movable mass positioned within the housing and configured to move within the housing to cause the haptic actuator to produce a vibrational response including;

    a first component within a frequency range; and

    a second component outside of the frequency range and providing a haptic output portion of the vibrational response; and

    a tuning feature incorporated with the wall and configured to reduce the first component of the vibrational response while substantially maintaining the haptic output portion of the vibrational response, the tuning feature defined by a recess having a depth between about 5 microns and about 10 microns into the wall.

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