Piezoelectric element

The piezoelectric element includes an element body, an external electrode, and an internal electrode. The internal electrode has first and second internal conductors facing each other. The first inner conductor includes first and second conductor portions continuous with each other. The second inner conductor includes: a third conductor portion facing the first conductor portion in a direction in which the first inner conductor and the second inner conductor face each other; and a fourth conductor portion having a first region connected to the second conductor portion and a second region continuous with the first region and the third conductor portion. The fourth conductor portion is located in a through hole penetrating the element body portion in the above direction. The thickness of the fourth conductor portion in the above direction increases toward the center line of the through hole. 压电元件具备：素体、外部电极和内部电极。内部电极具有相互相对的第一及第二内部导体。第一内部导体包含相互连续的第一及第二导体部分。第二内部导体包含：第三导体部分，其在第一内部导体与第二内部导体相对的方向上与第一导体部分相对；和第四导体部分，其具