Piezoelectric resonator and electric component using the same

摘要

A piezoelectric resonator (10) has a base member. The base member (12) includes a piezoelectric member at the center in the longitudinal direction and dielectric members disposed at both ends. A plurality of internal electrodes (14) are formed in the base member. The piezoelectric member layer at the center of the base member (14) is polarized in the longitudinal direction of the base member (12) in opposite directions at both sides of an internal electrode (14). The center section of the base member (12) is used as a vibrating section (24). On the other hand, the dielectric members at both ends of the base member (12) are not polarized and used as capacitor sections (26). Adjacent internal electrodes (14) are connected to external electrodes (20,22) serving as input and output electrodes, respectively.