Abstract
A vibration speaker for a portable electronic device is disclosed herein. The vibration speaker comprises a case. A loudspeaker member for generating a sound is contained in the case. The loudspeaker member comprises a frame, a magnet, a voice coil and a membrane. The voice coil is operable to generate a movement of the membrane vertically up and down when an electric current is applied to the voice coil and a magnetic field is formed by interaction between the voice coil and the magnet. The vibration speaker additionally comprises a vibration coil for generating a vibration.The vibration coil is positioned in relation to the magnet of the loudspeaker member such that the vibration coil is operable to generate a movement of the entire loudspeaker member vertically up and down when an electric current is applied to the vibration coil and a magnetic field is formed by interaction between the vibration coil and the magnet. Metal springs may be positioned to elastically support between the loudspeaker member and the case.
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