Patent ID: 8622526

Claim:
A liquid ejecting head comprising: a flow passage formation substrate in which pressure generation chambers and liquid flow passages demarcated by partition walls are formed, the flow passage formation substrate being made of ceramics; a diaphragm plate that is provided on one surface of the flow passage formation substrate to constitute a part of each of the pressure generation chambers and each of the liquid flow passages, the diaphragm plate being made of insulating ceramics; piezoelectric elements that are provided on one surface of the diaphragm plate each at a position where the piezoelectric element overlaps the corresponding pressure generation chamber with the diaphragm plate interposed therebetween, the piezoelectric element including a pair of electrodes; a driving circuit that is connected to the electrodes; and a nozzle plate in which nozzle orifices that are in communication with the pressure generation chambers are formed, the nozzle plate being made of conductive ceramics.