Patent ID: 6215229
Filing Date: 2001-04-10
Classification: H03H

Abstract:
A chip-type resonator comprising:a capacitor;a piezoelectric element including:a piezoelectric substrate including a first major surface and a second major surface;first and second excitation electrodes respectively disposed on the first and second major surfaces of the piezoelectric substrate and opposed to each other with the piezoelectric substrate disposed therebetween; andfirst and second lead electrodes respectively connected to the first and second excitation electrodes and extending to respective peripheral edges of the piezoelectric substrate;first and second dielectric substrates sandwiching the piezoelectric element to constitute a laminate body including the piezoelectric element and the first and second dielectric substrates;a plurality of external electrodes provided so as to extend from an outer major surface of the first dielectric substrate to an outer major surface of the second dielectric substrate along opposing first and second side surfaces of the laminate body, the plurality of external electrodes being spaced from each other so as to define the capacitor;the first and second lead electrodes of the piezoelectric element being arranged and capable of being connected to any of the external electrodes; andat least one of the plurality of external electrodes being divided on the outer major surface of the second dielectric substrate into a first electrode portion and a second electrode portion spaced from the first electrode portion on the outer major surface of the second dielectric substrate.