| 摘要 |
PROBLEM TO BE SOLVED: To provide a loudspeaker diaphragm capable of constituting a thin loudspeaker in which a high limit frequency is expanded as to a speaker diaphragm for a thin loudspeaker to be used for various image/acoustic apparatuses. SOLUTION: The loudspeaker diaphragm is constituted of an approximately plane diaphragm 501, a spiral planar voice coil 504 formed at least on one surface of the diaphragm 501 and a reinforcing wire 121, formed on the inner periphery of the planar voice coil 504 separately from the voice coil 504. Since the reinforcing wire 121 also is formed on the plane diaphragm 501, in addition to the voice coil 504, the loudspeaker diaphragm can contribute to the thinning of a speaker as a loudspeaker diaphragm of superior shape rigidity. COPYRIGHT: (C)2007,JPO&INPIT
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