PIEZOELECTRIC DEVICE AND METHOD FOR MANUFACTURING THE SAME

摘要

A piezoelectric device includes a piezoelectric vibrating piece with a pair of excitation electrodes, a base plate, and a non-conductive bonding material. The base includes a pair of castellations that are hollowed into a side face from the mounting surface to the bonding surface. The pair of castellations include a first surface and a second surface. The first surface extends outward from the mounting surface toward the bonding surface side. The second surface extends outward from the bonding surface toward the mounting surface side. The second surface has a smaller area than an area of the first surface. A wiring electrode is disposed on the first surface, the second surface, and a side face of the bonding material. The wiring electrode is of a same electrode layer as the external electrode. The wiring electrode extends from the external electrode to the extraction electrodes.