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Tactile touch panel actuator mechanism

  • US 9,715,280 B2
  • Filed: 01/02/2016
  • Issued: 07/25/2017
  • Est. Priority Date: 06/26/2007
  • Status: Active Grant
First Claim
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1. A tactile touch panel comprising:

  • a display;

    a piezoelectric layer having a first surface and a second surface, wherein the first surface of the piezoelectric layer is configured to receive inputs and the second surface of the piezoelectric layer is disposed adjacent to the display,wherein the piezoelectric layer comprises a plurality of piezoelectric cells with each piezoelectric cell of the plurality of piezoelectric cells having a cantilever spring made of a piezoelectric material and being configured to provide a haptic effect independent of other piezoelectric cells of the plurality of piezoelectric cells;

    an electrical insulated layer having a third surface and a fourth surface that is opposite the third surface, wherein the third surface of the electrical insulated layer is configured to receive the inputs, and the fourth surface of the electrical insulated layer is disposed adjacent to the first surface of the piezoelectric layer; and

    a control circuit configured to cause each piezoelectric cell of the plurality of piezoelectric cells that receives one of the inputs to generate a haptic effect by vibrating the cantilever spring of the piezoelectric cell, wherein the cantilever spring of each of the plurality of piezoelectric cells has two parallel beams connected at first ends thereof by a third beam that is perpendicular to the two parallel beams, and wherein the two parallel beams are connected at second and opposite ends thereof to the piezoelectric cell.

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