Acoustic transducer and related fabrication and packaging techniques
AssigneeSooriakumar Kathirgamasundaram
InventorsKathirgamasundaram Sooriakumar, Anu Austin, Ian Rose Bihag
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Abstract
An acoustic transducer includes a first flexible structure having a top surface and a bottom surface. A transducer is attached to the top surface of the first flexible structure, wherein the transducer causes deformation of the first flexible structure when an input electrical signal is applied to the transducer. A second flexible structure has a convex top surface and a concave bottom surface. The convex top surface of the second flexible structure is in contact with the bottom surface of the first flexible structure. Deformation of the first flexible structure causes deformation of the second flexible structure.
Claims16
An acoustic transducer, comprising:
- a first flexible structure having a flat top surface and a flat bottom surface;
- a transducer attached to the flat top surface of the first flexible structure, wherein the transducer causes deformation of the first flexible structure when an input electrical signal is applied to the transducer;
- and
- a second flexible structure having a convex top surface and a concave bottom surface, the convex top surface of the second flexible structure being in bonded contact with the flat bottom surface of the first flexible structure, the second flexible structure including:
- a first layer in bonded contact with the flat bottom surface of the first flexible structure, the first layer including a first material, the first material having a first thermal expansion coefficient;
- and
- a second layer, the second layer including a second material, the second material having a second thermal expansion coefficient, wherein the first thermal expansion coefficient is smaller than the second thermal expansion coefficient;
- wherein deformation of the first flexible structure causes deformation of the second flexible structure.
An acoustic transducer, comprising:
- a first flexible structure having a flat top surface and a flat bottom surface;
- a transducer attached to the flat top surface of the first flexible structure, wherein the transducer causes deformation of the first flexible structure when an input electrical signal is applied to the transducer;
- and
- a second flexible structure having a convex top surface and a concave bottom surface, the convex top surface of the second flexible structure being in non-bonded contact with the flat bottom surface of the first flexible structure, the second flexible structure including:
- a first layer in non-bonded contact with the flat bottom surface of the first flexible structure, the first layer including a first material, the first material having a first thermal expansion coefficient;
- and
- a second layer, the second layer including a second material, the second material having a second thermal expansion coefficient, wherein the first thermal expansion coefficient is smaller than the second thermal expansion coefficient;
- wherein deformation of the first flexible structure causes deformation of the second flexible structure.
Dependencies are inferred from the claim text.