Piezoelectric vibrator unit, ink jet recording head using the piezoelectric vibrator unit and method of manufacturing the same

摘要

The present invention is directed to a piezoelectric vibrator unit (5) including an elastic plate (1) made of piezoelectric material having at least one curved portion (2). The piezoelectric vibrator unit (5) also includes at least one common electrode (3) and a discrete electrode (4) which are formed on opposite sides of the elastic plate (1). The application of an electric field applied between the electrodes 3 and 4 causes the extension or contraction of the curved portion (2) of the plate (1).