Coil construction for voice coil motor

This application relates generally to voice coil motors and more particularly to a coil construction for a voice coil motor. A coil construction for a voice coil motor is disclosed. The coil construction includes a series of stacked planar coils disposed on a substrate material. Each planar coil is...

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Bibliographische Detailangaben
Hauptverfasser: Rafaelof, Menachem, McDonald, Ted Randal
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:This application relates generally to voice coil motors and more particularly to a coil construction for a voice coil motor. A coil construction for a voice coil motor is disclosed. The coil construction includes a series of stacked planar coils disposed on a substrate material. Each planar coil is separated from its neighboring coil or coils by a viscoelastic material to reduce vibration of the coil construction. The coil construction is attached to an actuator arm. Control circuitry creates a current in the coil construction to position a head on the actuator arm. Also disclosed is a method for making a coil for a voice coil motor. The method includes the steps of masking a substrate having a conductive layer with a photoresist, exposing the mask to create a pattern of planar coils, developing the photoresist, and etching the conductive layer to create a planar coil.