Patent ID: 8827428

Claim:
A piezoelectric motor comprising: a piezoelectric element including a piezoelectric layer, a first electrode, and a second electrode; the first electrode formed on one side of the piezoelectric layer; and the second electrode formed on the other side of the piezoelectric layer; a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby, wherein the piezoelectric layer includes a longitudinal vibration excitation region and four bending vibration excitation regions, the bending vibration excitation regions being disposed on either side of the longitudinal vibration excitation region so that two opposing diagonal pairs of the bending vibration excitation regions are formed; and a polarization direction of one of the opposing diagonal pairs of the bending vibration excitation regions in the piezoelectric layer is fixed and inverted relative to the other opposing diagonal pair of the bending vibration excitation regions.