| 摘要 |
A laminated-type piezoelectric element 1 is provided, which comprises a first external electrode layer 33 , which is located at a side area of the laminated-type piezoelectric element 1 , is electrically continuous to internal electrode layers 21 , and comprises plural expansible and contractible opening portions 33 a in a stacking direction of the laminated-type piezoelectric element 1 . As the first external electrode layer 33 is connected to the laminated-type piezoelectric element 1 with an electrically conductive adhesive member 32 and the electrically conductive adhesive member 32 is narrower than the first external electrode layer 33 , the electrically conductive adhesive member 32 penetrates into the opening portions 33 a of the first external electrode layer 33 to form connections in a shape of an anchor. Therefore, the first external electrode layer 33 is firmly connected to the laminated-type piezoelectric element 1.
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