| 摘要 |
Provided is a stack-type piezoelectric device capable of preventing variations in a response time of an active part corresponding to each individual electrode from occurring depending upon locations of individual electrodes. In a stack-type piezoelectric device 1 , a voltage is almost simultaneously applied through electroconductive members in a plurality of through holes formed in each of piezoelectric layers 3, 5 and along an extending direction of relay electrodes 6 , to portions opposed to individual electrodes 2 arrayed in each row direction, in each of common electrodes 4, 4 adjacent in the thickness direction. Therefore, it is feasible to prevent the variations in the response time of the active part corresponding to each individual electrode 2 from occurring depending upon the locations of the individual electrodes 2 arranged in a matrix, whereby the stack-type piezoelectric device 1 can be appropriately driven.
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