Patent ID: 7255428

Claim:
A droplet ejection head comprising: a first substrate in which a chamber is provided, the chamber being in fluid communication with a nozzle aperture and into which an ink flows; a diaphragm formed on the first substrate, and constituting a portion of the chamber; a piezoelectric element placed on a surface of the diaphragm on an opposite side from the chamber, and causing pressure change to be generated inside the chamber; a drive element that drives the piezoelectric element, and is flip-chip bonded to a terminal of the piezoelectric element; a second substrate in which an ink channel is provided, disposed on the first substrate and covering the piezoelectric element and the drive element; and an aperture provided on the second substrate at a position thereof corresponding to the drive element, the drive element being bonded by wire bonding via the aperture to a terminal that is formed on a surface of the second substrate on an opposite side from the drive element.