公开(公告)号：US10439126B2

公开(公告)日：2019-10-08

申请号：US15417713

申请日：2017-01-27

申请人： TDK CORPORATION

发明人： Satoshi Ozawa ,  Koji Taniwaki ,  Toshiki Maruyama ,  Akihiro Takeda

IPC分类号： H01L41/083 ,  H01L41/09 ,  H01L41/047 ,  H01L41/053 ,  H02N2/04

摘要： A piezoelectric actuator includes a piezoelectric element, a connection member of a shaft or weight connected to an element end surface of the piezoelectric element, the other one of the shaft and weight connected to a first end surface constituting an end surface opposing to the element end surface of the piezoelectric element, a wiring portion, and a resin portion. The piezoelectric element forms external electrodes on surfaces thereof, alternately laminates internal electrode layers with piezoelectric layers therebetween, and provides part of the external electrodes on the element end surface. The wiring portion has conductive portions corresponding to the external electrodes. The resin portion fixes the piezoelectric element, the connection member, and the wiring portion so that the element end surface opposes to the connection member with the wiring portion therebetween and that the conductive portions are electrically connected to the external electrodes.