| 摘要 |
PURPOSE: A mobile terminal is provided to limit inflow rate of a foreign material by performing a waterproof function through a plurality of vibration plate. CONSTITUTION: A speaker module(140) includes a vibration plate(141), a frame(142), an auxiliary diaphragm(143), and an assistant frame(144). The vibration plate outputs acoustic with vibration. The vibration plate is electrically connected to a circuit board. The frame is formed as a hollow body. The vibration plate is arranged in the hollow part of the frame. In a location which the auxiliary diaphragm is separated with the vibration plate, the auxiliary vibration diaphragm is arranged for covering the vibration plate. The auxiliary diaphragm can be formed by synthetic resin. A plurality of grooves is formed in a single-side of the auxiliary diaphragm.
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