Patent attributes
A vibration plate forms a part of a pressure chamber communicated with a nozzle orifice from which a liquid droplet is ejected. The pressure chamber is defined by first edges extending in a first direction with a first dimension and second edges extending in a second direction substantially perpendicular to the first direction with a second dimension shorter than the first dimension. A piezoelectric vibrator is disposed on the vibration plate so as to oppose to the pressure chamber. The piezoelectric vibrator includes a drive electrode extending beyond one of the second edges, a first piezoelectric layer laminated on the drive electrode so as to extend beyond the second edges, and a first common electrode laminated on the first piezoelectric layer. A drive terminal is electrically connected to the drive electrode to supply a drive signal thereto. The drive terminal is overlaid on one of portions of the first piezoelectric layer where is extended beyond the second edges, while being separated from the first common electrode.
