Piezoelectric haptic actuator integration
First Claim
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1. An electronic device, comprising:
- a processor;
a display coupled to the processor to render content on the electronic device, the display comprising a display substrate and a presentation layer disposed adjacent to a first side of the display substrate;
a haptic assembly disposed on a second side of the display substrate substantially opposite the first side of the display substrate, the haptic assembly comprising;
a haptic substrate; and
one or more piezoelectric haptic actuators disposed between the haptic substrate and the display substrate on a first side of the haptic substrate; and
a haptic controller coupled to the processor and configured to drive the one or more piezoelectric haptic actuators.
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Abstract
User interface experiences with electronic devices are enhanced with feedback cues such as haptic or vibrotactile output feedback. One or more piezoelectric actuators generate haptic output. The one or more piezoelectric actuators may be integrated onto a display substrate, a battery case, a device enclosure, or other component. Such integration may improve propagation of the haptic output to the user, reduce bulk of the electronic device, minimize parts count, and reduce production costs.
64 Citations
24 Claims
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1. An electronic device, comprising:
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a processor; a display coupled to the processor to render content on the electronic device, the display comprising a display substrate and a presentation layer disposed adjacent to a first side of the display substrate; a haptic assembly disposed on a second side of the display substrate substantially opposite the first side of the display substrate, the haptic assembly comprising; a haptic substrate; and one or more piezoelectric haptic actuators disposed between the haptic substrate and the display substrate on a first side of the haptic substrate; and a haptic controller coupled to the processor and configured to drive the one or more piezoelectric haptic actuators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22)
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12. A haptic output device comprising:
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a plurality of piezoelectric actuators disposed on a first side of a substrate and configured to, when activated, impart a physical force on at least a portion of a structure to generate a haptic output, wherein the plurality of piezoelectric actuators comprises two or more sizes different from one another; one or more additional piezoelectric actuators disposed on a second side of the substrate that is substantially opposite the first side, wherein the one or more additional piezoelectric actuators increase at least one of a stroke length and a force output associated with the haptic output when the plurality of piezoelectric actuators disposed on the first side of the substrate are active; and a plurality of electrical conductors configured to couple the plurality of piezoelectric actuators and the one or more additional piezoelectric actuators to a haptic controller configured to activate individual piezoelectric actuators. - View Dependent Claims (13, 14, 23, 24)
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15. A method of assembling an integrated haptic stack for insertion into an electronic device having a structure, the method comprising:
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affixing a haptic assembly to a first side of a display substrate having the first side and a second side opposite the first side, wherein; the haptic assembly comprises a haptic substrate and a piezoelectric haptic actuator disposed between the haptic substrate and the display substrate; and the piezoelectric haptic actuator is configured to, when active, impart a physical force on at least a portion of the structure of the electronic device to generate a haptic output; and joining a component of the electronic device to the second side of the display substrate to form the integrated haptic stack. - View Dependent Claims (16, 17, 18, 19)
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Specification