US 12,267,059 B2
Acoustic wave device
Syunsuke Kido, Nagaokakyo (JP); Tetsuya Kimura, Nagaokakyo (JP); Sho Nagatomo, Nagaokakyo (JP); and Minefumi Ouchi, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Sep. 16, 2022, as Appl. No. 17/946,574.
Application 17/946,574 is a continuation of application No. PCT/JP2021/010887, filed on Mar. 17, 2021.
Claims priority of application No. 2020-047890 (JP), filed on Mar. 18, 2020.
Prior Publication US 2023/0015397 A1, Jan. 19, 2023
Int. Cl. H03H 9/02 (2006.01); H03H 9/13 (2006.01); H03H 9/56 (2006.01)
CPC H03H 9/02228 (2013.01) [H03H 9/02015 (2013.01); H03H 9/13 (2013.01); H03H 9/568 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An acoustic wave device comprising:
a piezoelectric layer that is made of lithium niobate or lithium tantalate; and
a plurality of pairs of electrodes opposed to each other in a direction intersecting with a thickness direction of the piezoelectric layer; wherein
a bulk wave in a thickness shear primary mode is used;
the plurality of pairs of electrodes include at least one pair of first electrodes of a first acoustic wave resonator and at least one pair of second electrodes of a second acoustic wave resonator;
a direction orthogonal to a longitudinal direction of the second electrodes in the second acoustic wave resonator is inclined at an angle that is greater than 0° and smaller than 360° with respect to a direction orthogonal to a longitudinal direction of the first electrodes in the first acoustic wave resonator; and
at least one of the first electrodes and the second electrodes include a first busbar, a first electrode finger one end of which is connected to the first busbar, a second busbar that is provided separately from the first busbar, and a second electrode finger one end of which is connected to the second busbar, and the first busbar and the second busbar are non-parallel to each other.