公开(公告)号：US11689182B2

公开(公告)日：2023-06-27

申请号：US16628568

申请日：2018-07-05

申请人： KYOCERA Corporation

发明人： Naofumi Kasamatsu ,  Masahisa Shimozono ,  Tetsuya Kishino ,  Masaki Nanbu ,  Hongnian Li ,  Tatsuya Doumoto

IPC分类号： H03H9/145 ,  H03H9/02 ,  H03H9/25 ,  H03H9/64

CPC分类号： H03H9/14541 ,  H03H9/02559 ,  H03H9/14502 ,  H03H9/25 ,  H03H9/6483

摘要： An acoustic wave element 1 according to the present disclosure includes a piezoelectric substrate 2 and an IDT electrode 3 on the piezoelectric substrate 2. The IDT electrode 3 includes a multilayer structure of a first layer 35 comprised of Al containing 10% or less of a sub-component and a second layer 37 comprised of a CuAl2 alloy. The second layer 37 enables the acoustic wave element 1 to have excellent electric power resistance.