Haptic feedback using composite piezoelectric actuator
AssigneeImmersion Corporation
InventorsAli Modarres, Juan Manuel Cruz-Hernandez, Danny A. Grant, Christophe Ramstein
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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.
Claims23
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.
A human-computer interface comprising:
- 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.
An electronic device comprising:
- 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.
Dependencies are inferred from the claim text.