Patent ID: 7382083

Claim:
A piezoelectric structural body used for manufacturing a piezoelectric actuator unit structured by arranging a plurality of piezoelectric vibrators formed by alternately laminating electrode layers and piezoelectric material layers so as to vibrate in a lamination direction of said layers, comprising: a laminate formed by alternately laminating a first conductive material layer for forming common electrode layers of said plurality of piezoelectric vibrators on a reference potential side and a second conductive material layer for forming individual electrode layers of said plurality of piezoelectric vibrators on a drive voltage input side while sandwiching a piezoelectric material layer between said first conductive material layer and said second conductive material layer, wherein: in said first conductive material layer, a plurality of first windows are formed so as to be arranged at a predetermined pitch to form a first window row along said vibrator arrangement direction, and in said second conductive material layer, a plurality of second windows are formed so as to be arranged at said predetermined pitch to form a second window row parallel with said first window row, and said first windows and said second windows are staggered from each other at a pitch which is a half of said predetermined pitch in said vibrator arrangement direction.