US Patent 7570775 Microelectromechanical speaker

Disclosed is a microelectromechanical (MEM) speaker device. In one embodiment, the MEM speaker device includes: (i) a base layer; (ii) a device controller; (iii) a coil layer connected to magnetic material; (iv) an oscillator connected to a spring and the magnetic material; (v) a spring between the oscillator and a support layer; (vi) a protective layer over the oscillator; and (vii) a support post connected to the oscillator, the base layer, the protective layer, and the coil layer. Embodiments of the invention can provide a MEM speaker device where control of the oscillator by electromagnetic force produces sound energy.