Haptic feedback using composite piezoelectric actuator
First Claim
Patent Images
1. An input/output device comprising:
- a touch sensitive layer configured to sense if an object touches the touch sensitive layer and to sense where the touch sensitive layer is contacted;
a first electrode layer and second electrode layer, at least a portion of one of the first electrode layer and second electrode layer connected to at least a portion of the touch sensitive layer;
a composite piezoelectric layer connected between the first electrode layer and second electrode layer, the composite piezoelectric layer having a plurality of piezoelectric rods arranged in a polymer matrix;
a display layer configured to visually display images; and
a drive circuit configured to apply an alternating voltage to the first electrode layer and second electrode layer.
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Abstract
Human-computer interface devices are described in the present disclosure. In one embodiment, among several embodiments, a human-computer interface includes a display device configured to visually display images to a user and a touch sensitive device configured to sense contact with the user. Furthermore, the human-computer interface includes a composite piezoelectric layer positioned between the display device and the touch sensitive device. The composite piezoelectric layer is configured to provide haptic feedback to the user.
162 Citations
23 Claims
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1. An input/output device comprising:
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a touch sensitive layer configured to sense if an object touches the touch sensitive layer and to sense where the touch sensitive layer is contacted; a first electrode layer and second electrode layer, at least a portion of one of the first electrode layer and second electrode layer connected to at least a portion of the touch sensitive layer; a composite piezoelectric layer connected between the first electrode layer and second electrode layer, the composite piezoelectric layer having a plurality of piezoelectric rods arranged in a polymer matrix; a display layer configured to visually display images; and a drive circuit configured to apply an alternating voltage to the first electrode layer and second electrode layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A human-computer interface comprising:
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a display device configured to visually display images to a user; a touch sensitive device configured to sense contact with the user; and a composite piezoelectric layer positioned between the display device and the touch sensitive device, the composite piezoelectric layer having a plurality of piezoelectric rods arranged in a polymer matrix and configured to provide haptic feedback to the user. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An electronic device comprising:
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a processing device configured to control the operations of the electronic device; and an input/output device configured to generate haptic effects; wherein the input/output device comprises at least a composite piezoelectric material having a plurality of piezoelectric rods embedded in a polymer matrix. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification