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US 11,697,135 B2Granted
Multi-frequency hybrid piezo actuation and capactive transducer
AssigneeTexas Instruments Incorporated
InventorsMohammad Hadi Motieian Najar, Peter Smeys
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Abstract
In one embodiment, a transducer comprises a first piezoelectric stack comprising a piezoelectric material; a first layer in contact with the piezoelectric stack; and a base structure beneath the first layer. The first layer has a first displacement between a first portion of the base structure and the first layer, and the first displacement is configurable by a first bias voltage received by the transducer.
Claims17
A transducer, comprising:
- a first piezoelectric stack comprising a piezoelectric material;
- a first layer in contact with the piezoelectric stack;
- and
- a base structure beneath the first layer, wherein the transducer is configured to have:
- a gap between the first layer and a first portion of the base structure in an absence of a first bias voltage;
- and
- contact between the first layer and the first portion of base structure responsive to the first bias voltage.
4 more elements
Dependencies are inferred from the claim text.