Patent ID: 7233099
Filing Date: 2007-06-19
Classification: H01L

Abstract:
1. A multilayer piezoelectric element comprising: a first internal electrode and a second internal electrode, the first internal electrode and the second internal electrode being laminated alternately; and a piezoelectric layer disposed between the first and second internal electrodes; wherein a plurality of the first internal electrodes are connected to each other, and a plurality of the second internal electrodes are connected to each other, via through holes that penetrate the piezoelectric layer in a laminated direction of the first internal electrode and the second internal electrode; the first internal electrode is formed so that an entire periphery portion of the first internal electrode is exposed on a side face of the multilayer piezoelectric element; and the second internal electrode is formed so that an entire periphery portion of the second internal electrode is positioned inside the side face of the multilayer piezoelectric element.