Piezoelectric resonator

Abstract

A piezoelectric resonator which achieves a compact oscillator with high performance having high thermal resistance and a narrow tolerance includes an element body having an excitation layer and a non-excitation layer. One vibration electrode is provided on the surface of the excitation layer and another vibration electrode is provided between the excitation layer and the non-excitation layer. The two vibration electrodes extend from opposing ends of the excitation layer toward the approximate central portion thereof so as to oppose each other at the approximate central portion of the excitation layer. On end-surfaces of the element body, end-surface electrodes are connected to the vibration electrodes, respectively.