Laminate-type piezoelectric element and method of producing the same
AssigneeDenso Corporation
InventorsShige Kadotani, Akio Iwase, Teruaki Yamaguchi
Life of this patent
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Abstract
A laminate-type piezoelectric element 1 having a ceramic laminated body 10 obtained by alternately laminating piezoelectric layers 11 made of a piezoelectric material and inner electrode layers 20 having electrical conductivity, and having outer electrodes 34 joined to the side surfaces 101 and 102 of the ceramic laminated body 10 via an electrically conductive adhesive 33, wherein the electrically conductive adhesive 33 has buried therein mesh bodies 4 obtained by forming a mesh by using a nonmetallic material. The mesh bodies 4 are desirably constituted by using any one of a resin, ceramic, carbon or glass.
Claims13
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, wherein said electrically conductive adhesive has buried therein at least parts of mesh bodies obtained by forming a mesh by using a 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:
- a laminated body-forming step of forming said ceramic laminated body by alternately laminating said piezoelectric layers and said inner electrode layers;
- an adhesive-applying step of applying said electrically conductive adhesive to the side surfaces of said ceramic laminated body;
- a mesh body-arranging step of burying at least parts of mesh bodies obtained by forming a mesh by using a nonmetallic material in said electrically conductive adhesive;
- and
- an external electrode-joining step of joining said external electrodes to said electrically conductive adhesive.
Dependencies are inferred from the claim text.