Laminating type piezoelectric porcelain and manufacture thereof

Abstract

Abstract PURPOSE:To reduce the generation of cracks largely by repeated operation, and to improve durability by preventing the mutual contact and unifying of piezoelectric porcelain elements. CONSTITUTION:Platinum paste is printed on a substrate 1, and internal electrode layers 2 are formed. Resin paste consisting of alpha-terpineol, ethylene glycol and ethyl cellulose is printed to an approximately U shape under the state in which one parts of the internal electrode layers 2 are exposed, thus forming resin layers 3. Piezoelectric porcelain element paste is printed on the electrode- resin layers 4, thus shaping piezoelectric porcelain elements 5. The piezoelectric porcelain element layers 5 and the electrode-resin layers 4 are laminated, and platinum paste is applied on a side surface as an external electrode 7. A laminate 6 is baked, thus obtaining a laminating type piezoelectric porcelain 8. The resin layers 3 are scattered to form space layers 9, and internal stress on repeated operation is absorbed and relaxed by the space sections.

Inventors

• 👤 Kenji Ezaki
• 👤 研司 江崎

Bibliographic Details