Patent ID: 6433466
Filing Date: 2002-08-13
Classification: H03H

Abstract:
A piezoelectric resonant component comprising:an energy trap type piezoelectric resonant element including a piezoelectric plate and a plurality of resonant electrodes partially disposed on both main surfaces of the piezoelectric plate and in which a piezoelectric vibration portion is defined by a portion in which the resonant electrodes of the main surface are opposed to each other; an exterior case member which is fixed to at least one surface of the piezoelectric resonant element so as to define a space arranged to allow for free and unhindered vibration of the vibration portion of the piezoelectric resonant element; and a plurality of external electrodes disposed on the surface on the opposite side of the surface of the exterior case member which is fixed to the piezoelectric resonant element; wherein the plurality of external electrodes are arranged such that the plurality of external electrodesdo not overlap with the space through the intermediary of the exterior case member; and wherein the portion of the exterior case member which is opposed to the space is curved toward the piezoelectric resonant element side.