Method of producing a piezoelectric element

Metal working – Piezoelectric device making

Reexamination Certificate

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C029S594000, C029S597000, C029S602100, C029S609100, C310S31300R, C310S31300R, C310S358000, C333S187000, C333S188000, C333S189000, C333S190000, C333S191000, C427S100000, C427S226000, C427S229000

Reexamination Certificate

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06988300

ABSTRACT:
A piezoelectric element contains a piezoelectric ceramic body having a layered perovskite structure, and has the C axis selected and oriented in the thickness direction. In the piezoelectric ceramic body, line shaped electrodes are formed perpendicular to the C axis selected and oriented. The electrodes exposed at both of the end faces of the piezoelectric ceramic body are covered with conductive materials and insulation materials. The piezoelectric ceramic body is polarized in the opposite directions on both of the sides of electrodes arranged in the width direction. Moreover, external electrodes are formed on the faces where the conductive materials and the insulation materials are formed, whereby two groups of the electrodes are arranged in an interdigital electrode form.

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