piezoelectric functional parts

Abstract

Abstract PURPOSE:To expand a bonding area between a piezoelectric ceramic body and an adhesive layer, and to obtain a piezoelectric functional part, in which its adhesive layer is difficult to peeled, by forming irregularities to the piezoelectric ceramic body in a surface on which the adhesive layer is shaped. CONSTITUTION:Irregularities are formed by shaping a plurality of protruding sections 11a to a surface, on which an adhesive layer is formed, in a tabular piezoelectric ceramic body 11. Electrodes 12, 13 for applying voltage are shaped onto both main surfaces of the piezoelectric ceramic body. The electrode 13 is formed so as to also cover the surfaces of a plurality of the protruding sections 11a, and a diaphragm 14 is laminated through the adhesive layer 15. Since a bonding area between the adhesive layer 15 and the piezoelectric ceramic body 11 is spread by the irregularities, adhesion between the piezoelectric ceramic body 11 and the adhesive layer 15 is increased effectively, thus preventing the peeling of the adhesive layer 15 at the time of usage with effect.

Inventors

• 👤 Kenji Komatsu
• 👤 小松　健治
• 👤 Makoto Yamamoto
• 👤 誠 山本
• 👤 Tsuneo Amano
• 👤 天野　常男
• 👤 Masayoshi Katsube
• 👤 勝部　正嘉

Bibliographic Details