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US 10,321,235 B2Granted
Transducer having a conductive suspension member
AssigneeApple Inc.
InventorAlexander V. Salvatti
Life of this patent
Estimating the term…
Abstract
A speaker including a frame, and a magnet assembly coupled to the frame. The magnet assembly forms an air gap through which a magnetic flux is directed. The speaker further including a voice coil suspended in the air gap, a diaphragm coupled to the voice coil and a compliant suspension member for suspending the voice coil within the air gap. The suspension member includes an electrically conductive biphasic member for providing an electrical connection between the voice coil and a circuit coupled to the frame.
Claims25
A micro speaker comprising:
- a frame having a terminal coupled thereto;
- a magnet assembly coupled to the frame, the magnet assembly forming an air gap through which a magnetic flux is directed;
- a voice coil suspended in the air gap;
- a diaphragm coupled to the voice coil;
- and
- a compliant suspension member for suspending the voice coil and the diaphragm from the frame, the compliant suspension member having a surface that occupies an entire space between the diaphragm and the frame, the voice coil is attached to the surface and an electrically conductive biphasic member is attached to a portion of the surface extending along only one side of the voice coil, and the electrically conductive biphasic member electrically connects the voice coil to the terminal.
3 more elements
An electromechanical transducer comprising:
- a stationary portion having a terminal coupled thereto;
- a moving portion that is operable to move in response to a Lorentz force and generate a physical vibration or sound;
- a compliant suspension member for suspending the moving portion from the stationary portion, the moving portion is positioned on a surface of the compliant suspension member;
- and
- a first biphasic electrode layer and a second biphasic electrode layer coupled to the compliant suspension member, the first and second biphasic electrode layers are operable to provide an electrical connection between the moving portion and the terminal coupled to the stationary portion, wherein the first biphasic electrode layer comprises a side coupled to one side of the moving portion and having a length less than a length of the one side of the moving portion and the second biphasic electrode layer comprises a side coupled to another side of the moving portion and having a length less than a length of the another side of the moving portion.
2 more elements
A micro speaker suspension member, the micro speaker suspension member comprising:
- a compliant membrane dimensioned to suspend a planar micro speaker diaphragm and voice coil from a micro speaker frame, the compliant membrane comprises a sheet of compliant material positioned across an opening in the micro speaker frame, the planar micro speaker diaphragm is attached to a first surface of the sheet of compliant material and the voice coil is attached to a second surface of the sheet of compliant material;
- and
- a biphasic electrode coupled to the compliant membrane, the biphasic electrode having a solid layer coupled to the second surface of the sheet of compliant material and a liquid layer coupled to the solid layer, the solid layer occupies an entire space between at least one side of the planar micro speaker diaphragm and the frame.
A micro speaker comprising:
- a frame having a terminal coupled thereto;
- a magnet assembly coupled to the frame, the magnet assembly forming an air gap through which a magnetic flux is directed;
- a voice coil suspended in the air gap;
- a diaphragm coupled to the voice coil;
- and
- a compliant suspension member for suspending the voice coil and the diaphragm from the frame, the compliant suspension member having a planar region surrounded by a bowed region, an entire bottom side of the diaphragm is attached to a top surface of the planar region, an electrically conductive biphasic member is attached to, and conforms to, the bowed region, and the voice coil is attached to a same surface of the compliant suspension member as the electrically conductive biphasic member, and the electrically conductive biphasic member electrically connects the voice coil to the terminal.
3 more elements
Dependencies are inferred from the claim text.