VOICE COIL AND AN SMT MICRO SPEAKER USING THE SAME, CAPABLE OF IMPROVING PRODUCTIVITY AND RELIABILITY BY APPLYING AN SMT

摘要

PURPOSE: A voice coil and an SMT micro speaker using the same are provided to apply an SMT to the speaker by using a FPCB(Flexible Printed Circuit Board) for connecting an electrode terminal.;CONSTITUTION: A voice coil is formed by laminating annular laminate metal plates(112-1 to 112-k) with a preset gap. A FPCB(120) connects the voice coil to an connection electrode. The width of the laminate metal plate is 0.6 to 0.8 mm. The gap is desirably 0.5 mm. Each laminate metal plate is laminated with insulation materials. The laminate metal plate is connected to adjacent laminate metal plates in series or parallel. An active device(122) for impedance matching is installed on the FPCB.;COPYRIGHT KIPO 2011