Laminate-type piezoelectric element and method of producing the same
AssigneeDenso Corporation
InventorsShige Kadotani, Akio Iwase, Teruaki Yamaguchi
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Abstract
A laminate-type piezoelectric element has a ceramic laminated body obtained by alternately laminating piezoelectric layers made of a piezoelectric material and inner electrode layers having electrical conductivity. Outer electrodes are joined to side surfaces of the ceramic laminated body via an electrically conductive adhesive. The electrically conductive adhesive has buried therein mesh bodies obtained by forming a mesh by using a nonmetallic material. The mesh bodies are desirably constituted by using any one of a resin, ceramic, carbon or glass.
Claims13
A laminate-type piezoelectric element comprising:
- a ceramic laminated body having alternately laminated piezoelectric layers made of a piezoelectric material and inner electrode layers having electrical conductivity, and having outer electrodes joined to the side surfaces of said ceramic laminated body via an electrically conductive adhesive,
- wherein said electrically conductive adhesive has buried therein at least parts of a mesh body formed as a mesh including nonmetallic material.
A method of producing a laminate-type piezoelectric element having a ceramic laminated body obtained by alternately laminating piezoelectric layers made of a piezoelectric material and inner electrode layers having electrical conductivity, and having outer electrodes joined to the side surfaces of said ceramic laminated body via an electrically conductive adhesive, the method comprising:
- forming a ceramic laminated body by alternately laminating piezoelectric layers and inner electrode layers;
- applying electrically conductive adhesive to side surfaces of said ceramic laminated body;
- burying at least parts of a mesh body formed by using a nonmetallic material in said electrically conductive adhesive;
- and
- joining said external electrodes to said electrically conductive adhesive.
Dependencies are inferred from the claim text.