Acoustic membrane with asymmetric layer arrangement
AssigneeKnowles IPC (M) Sdn. Bhd.
InventorsChristian Lembacher, Armin Timmerer
Life of this patent
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Abstract
A membrane for an acoustic transducer may comprise a first layer comprising a first material, a second layer disposed on the first layer, the second layer comprising a second material that is different from the first material, and a third layer disposed on the second layer, the third layer comprising a third material that is different from the first material and the second material, the third layer configured to be coupled with a moveable coil. The first material may be a polyaryletherketone (PAEK), the second material may be acrylate, and the third material may be polyetherimide (PEI), polycarbonate (PC), or another similar material.
Claims20
A membrane for an acoustic transducer, the membrane comprising:
- a first layer, the first layer comprising a first material;
- a second layer, disposed on the first layer, the second layer comprising a second material that is different from the first material;
- and
- a third layer configured to be coupled with a moveable coil, the third layer disposed on the second layer, the third layer comprising a third material that is different from the first material and the second material;
- wherein the first material comprises a polyaryletherketone, the second material comprises adhesive, and the third material is selected from the list consisting of polyetherimide, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, and polyarylate.
A method of manufacturing an acoustic transducer, the method comprising:
- providing a first membrane layer, the first membrane layer comprising a polyaryletherketone material;
- disposing a second membrane layer on the first membrane layer, the second membrane layer comprising adhesive;
- and
- disposing a third membrane layer on the second membrane layer, the third membrane layer comprising a second thermoplastic material that is different from the first thermoplastic material, the second thermoplastic material comprising at least one of polyetherimide, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, and polyarylate.
An acoustic transducer, comprising:
- a moveable electromagnetic coil;
- and
- a membrane, the membrane comprising:
- a first layer comprising a first material;
- a second layer, disposed on the first layer, the second layer comprising a second material that is different from the first material;
- and
- a third layer, disposed on the second layer and coupled with the coil, the third layer comprising a third material that is different from the first material and the second material;
- wherein the first material comprises a polyaryletherketone, the second material comprises adhesive, and the third material is selected from the list consisting of polyetherimide, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, and polyarylate.
Dependencies are inferred from the claim text.