Piezoelectric element

Abstract

Provided is a piezoelectric element, of which thickness can be thin and uniform, and in which winding failure hardly occurs during manufacturing and deformation of the thin film electrode is unlikely to occur. A piezoelectric element includes a piezoelectric layer, electrode layers formed on both sides of the piezoelectric layer, and a protective layer laminated on a surface of the electrode layer opposite to a surface on the piezoelectric layer side, in which the electrode layer has an exposed portion where the piezoelectric layer is not formed at least at a part of an end portion, and the piezoelectric layer has a gradually decreasing portion of which thickness gradually decreases toward the exposed portion in the end portion adjacent to the exposed portion.

Dependencies are inferred from the claim text.