A piezoelectric actuator, the manufacturing method of the same and the head suspension assembly using the same are disclosed, wherein the piezoelectric actuator can be disposed easily without any breakage in mounting and can provide a magnetic head with fine displacements efficiently. More specifically, a first coupling portion and a second coupling portion are provided to couple the first piezoelectric element unit in parallel with the second piezoelectric element unit without being influenced each other by respective displacements. The configuration can provide a head suspension assembly with a high head positioning accuracy.

 
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< Digital microelectronic circuit with a clocked data-processing unit and a converting unit

< Magnetic head supporting device having dummy weight used to coincide mass and swing movement centers

> Micro-flexure suspension including piezoelectric elements for secondary actuation

> Magnetoresistive effective element, thin film magnetic head, magnetic head device and magnetic recording/reproducing device

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