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US08878806B2 Haptic feedback using composite piezoelectric actuator 有权
使用复合压电致动器的触觉反馈

Haptic feedback using composite piezoelectric actuator
Abstract:
An input/output device includes 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, and a composite piezoelectric layer connected between the first electrode layer and second electrode layer. The composite piezoelectric layer has a plurality of piezoelectric rods arranged in a polymer matrix. The polymer matrix provides the composite piezoelectric layer with a predetermined property. A drive circuit is configured to apply an alternating voltage to the first electrode layer and second electrode layer in response to the sensed object.
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