Piezoelectric disk drive suspension motors having plated stiffeners
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United States of America Patent
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Jul 25, 2017
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N/A
app pub date -
Jan 4, 2017
filing date -
Dec 16, 2014
priority date (Note) -
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Abstract
Various embodiments concern a gimbaled flexure having a dual stage actuation structure. The flexure comprises a gimbal on which a motor is mounted. The motor comprises a first terminal, one or more layers of piezoelectric material, and a metal stiffener disposed directly on the first terminal. The stiffener comprises a layer of metal defining a majority of a top side of the motor. The first terminal can be gold sputtered on the piezoelectric material while the stiffener can be nickel plated on the gold. The stiffener can cause the motor, and the flexure on which it is mounted, to curl upon electrical activation of the motor.
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