LAYERED PIEZOELECTRIC ELEMENT AND INJECTION DEVICE USING THE SAME

摘要

There is provided a layered piezoelectric element having a high bending resistance and a high insulating characteristic, and an excellent displacement characteristic and an injection device using the piezoelectric element. The layered piezoelectric element includes a layered body (4) having a plurality of piezoelectric layers (1) layered via an internal electrode layer (2). At least a portion of a peripheral portion (31) located between two adjacent piezoelectric layers (1, 1) in the layer direction and located between a side end portion (2a) of the internal electrode layer (2) and a side surface (4a) of the layered body (4) is a scattered portion where a plurality of metal regions (3) are scattered via voids (21).