| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated piezoelectric element which has superior stress relaxing performance and does not have conductivity in a ceramic layer to have no decrease in displacing performance of the laminated piezoelectric element. SOLUTION: The laminated piezoelectric element 10 includes a piezoelectric layer 3, a ceramic laminate 4 having conductive internal electrode layers 1, 2 laminated alternately, and a pair of external electrodes 5, 5 formed on outer peripheral surfaces of the ceramic laminate 4. The one internal electrode layer 1 and the other internal electrode layer 2 stay in the ceramic laminate 4 such that the internal electrode layer 1 has one end 1' in contact with one external electrode 5 and the other end 1" at an interval t<SB>0</SB>with the other external electrode 5; and slits 7 extending from the pair of external electrodes 5, 5 to the inside of the ceramic laminate 4 are formed between the one internal electrode layer 1 and the other internal electrode layer 2, and filled with conductive resin bodies 8. COPYRIGHT: (C)2011,JPO&INPIT
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