PURPOSE: To obtain a piezoelectric resonator keeping a stable characteristic against shock and vibration with a large spurious attenuation and excellent selectivity.
CONSTITUTION: A common electrode 2 is provided on one side of a piezoelectric substrate 1 and split electrode pairs 3, 3 are provided on the other side. The split electrodes 3, 3 are formed in parallel with a part of area of a piezoelectric substrate chip, a conductive resin film 4 is fitted over a part of the surface of each split electrode film and the exposed chip of the piezoelectric substrate 1 and the conductive resin film 4 is separated on the piezoelectric substrate 1 between both split electrodes 3, 3. The conductive resin film 4 is flexible and brought into contact with an input/output terminal chip to keep the characteristic against shock and vibration.
SAITOU KAZUMASA
ISHIKAWA HIDETO
