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US 7,460,679 B2Granted
Flat panel speaker system with a coated diaphragm
AssigneePanasonic Corporation
InventorsSatoshi Itoh, Tetsuya Mouri, Masahide Sumiyama, Shoji Kamii
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Abstract
A speaker system having a structure in which the room surrounding the first diaphragm and the room adjacent to the second diaphragm are acoustically coupled. The second diaphragm has coating on a surface. Applying the coating to the second diaphragm enhances the reliability and performance of the speaker system. Besides, the diversely definable geometry of the diaphragm allows an electronic device employing the speaker system or the speaker module to have flexibility in design.
Claims14
A speaker system comprising:
- a frame coupled to a magnetic circuit;
- a first diaphragm fixed on a outer periphery of the frame;
- a voice coil, one end of which is fixed to the first diaphragm and an other end of which is fit within a magnetic gap of the magnetic circuit;
- a panel attached to the frame;
- a room surrounded by the panel to which a second diaphragm is attached;
- and
- the second diaphragm acoustically coupled with the room surrounded by the panel,
- wherein the second diaphragm has a front coating material on a front surface and a back coating material on a back surface, and the front coating material is different from the back coating material.
5 more elements
Dependencies are inferred from the claim text.