PIEZOELECTRIC OSCILLATION UNIT, MANUFACTURE THEREOF, AND INK JET RECORDING HEAD

摘要

PROBLEM TO BE SOLVED: To simplify the process for forming a conductive layer for external connection while enhancing reliability. SOLUTION: Since inner individual electrodes 17 constituting a piezoelectric oscillator or conductor layers constituting an inner common electrode 18 are interconnected through through holes 21a, 21b, 20a, 20b on the inside of the end face of the piezoelectric oscillator and connected with a segment electrode 22 and a common electrode 23 formed on the surface in the longitudinal direction, end face of intricate shape or formation of conductive layer at the corner is not required and conductive relationship is ensured even if the forward end face is chipped slightly.