Liquid-jet head and liquid-jet apparatus

A liquid-jet head comprising:

• a passage-forming substrate including at least two rows of pressure generating chambers communicating with a nozzle orifice and being defined by a plurality of compartment walls;
• and
• piezoelectric elements composed of a lower electrode, a piezoelectric layer and an upper electrode, the piezoelectric element being provided on one surface side of the passage-forming substrate with vibration plates interposed therebetween,
• wherein a joining plate joined onto the piezoelectric element side of the passage-forming substrate is provided, on which a drive circuit for driving the piezoelectric elements is mounted,
• a penetrated hole penetrating the joining plate in a thickness direction is provided in a portion corresponding to a space between the rows of the pressure generating chambers of the joining plate,
• an extracted wiring extracted from the individual piezoelectric elements is extended to the portion corresponding to the penetrated hole, and
• the extracted wiring and the drive circuit are electrically connected to each other with conductive wires extended through the penetrated hole.