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公开(公告)号：US09985606B2
公开(公告)日：2018-05-29
申请号：US15338008
申请日：2016-10-28
发明人： Ryo Miyamoto , Masato Ito , Osamu Kawachi
摘要： An acoustic wave filter includes: series resonators connected in series between input and output terminals; and lines connected in parallel to the series resonators, wherein at least one of the lines includes: a first resonator including a piezoelectric substance, and first lower and upper electrodes sandwiching the piezoelectric substance in a c-axis orientation direction of the piezoelectric substance; a second resonator that is connected in series to the first resonator, and includes another piezoelectric substance, and second lower and upper electrodes sandwiching the another piezoelectric substance so that one of the second lower and upper electrodes in the c-axis orientation direction have an electric potential equal to that of one of the first lower and upper electrodes in the c-axis orientation direction; and a capacitor connected in parallel to one of the first and second resonators and not connected in parallel to another one of the first and second resonators.
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公开(公告)号：US10693440B2
公开(公告)日：2020-06-23
申请号：US15985949
申请日：2018-05-22
发明人： Satoru Ohkubo , Kazuyuki Imagawa , Ryo Miyamoto
摘要： An acoustic wave device includes: a first substrate having a first surface on which an acoustic wave element is located; a second substrate having a second surface on which a functional element is located; a third substrate having a third surface, which faces the first and second surfaces, and a fourth surface being opposite to the third surface, a first metal layer separated from the acoustic wave element and a wiring line in the first substrate and connecting the first and third surfaces; a second metal layer separated from the functional element and a wiring line in the second substrate and connecting the second and third surfaces; a first metal pattern located on the third surface, being in contact with the first and second metal layers, and connecting the first and second metal layers; and a terminal located on the fourth surface and electrically connectable to the first metal pattern.
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公开(公告)号：US10581405B2
公开(公告)日：2020-03-03
申请号：US15646431
申请日：2017-07-11
发明人： Masato Ito , Yuki Endo , Ryo Miyamoto
摘要： A multiplexer includes: a first filter that includes a piezoelectric thin film resonator and is connected between a common terminal and a first terminal, the piezoelectric thin film resonator being located on a substrate; a second filter that includes an acoustic wave resonator and is connected between the common terminal and a second terminal, the acoustic wave resonator including an IDT located on a piezoelectric substrate; and a capacitor that includes a pair of electrodes facing each other in a planar direction and is coupled to the first filter, the pair of electrodes being located on the piezoelectric substrate.
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