PIEZOELECTRIC ACTUATOR AND ELECTRONIC DEVICE

摘要

It is possible to provide a small-size thin piezoelectric actuator which can be mounted on a mobile electronic device and operate with a low power consumption. It is also possible to provide an electronic device which uses the piezoelectric actuator to provide a function to give a contact feeling of a 3-dimensional movement to a users hand palm. The piezoelectric actuator (1) includes: a piezoelectric ceramic oscillator having a piezoelectric ceramic thin plate (5) bonded to at least one surface of a shim member (6); at least one holder (7) for holding the shim member (6); and a sheet-shaped elastic body (2). An oscillation generated by the piezoelectric ceramic oscillator is transmitted via the holder (7) and the sheet-shaped elastic body (2) to a case (3) of the electronic device.