公开(公告)号：US20140049341A1

公开(公告)日：2014-02-20

申请号：US14112547

申请日：2013-02-05

申请人： Tomoya Komatsu ,  Joji Fujiwara ,  Tetsuya Tsurunari ,  Hiroyuki Nakamura ,  Kazunori Nishimura

发明人： Tomoya Komatsu ,  Joji Fujiwara ,  Tetsuya Tsurunari ,  Hiroyuki Nakamura ,  Kazunori Nishimura

IPC分类号： H03H9/54

CPC分类号： H03H9/54 ,  H03H9/008 ,  H03H9/0566 ,  H03H9/0576 ,  H03H9/14582 ,  H03H9/14588 ,  H03H9/6436

摘要： A multimode elastic wave device includes a pair of reflectors, and a first interdigital transducer (IDT) electrode through a fifth IDT electrode arranged between the pair of reflectors. In this configuration, each of the average of electrode-finger pitches in the first IDT electrode and the average of electrode-finger pitches in the fifth IDT electrode is smaller than both of the average of electrode-finger pitches in the second IDT electrode and the average of electrode-finger pitches in the fourth IDT electrode.

摘要翻译： 多模弹性波装置包括一对反射器，以及通过布置在该对反射器之间的第五IDT电极的第一叉指式换能器（IDT）电极。 在该结构中，第一IDT电极中的电极指间隔的平均值和第五IDT电极中的电极指间隔的平均值均小于第二IDT电极中的电极指间隔的平均值， 第四IDT电极中电极指间隔的平均值。

公开(公告)号：US20140001919A1

公开(公告)日：2014-01-02

申请号：US14004163

申请日：2012-03-05

申请人： Tomoya Komatsu ,  Hiroyuki Nakamura ,  Tetsuya Tsurunari ,  Joji Fujiwara ,  Hidekazu Nakanishi

发明人： Tomoya Komatsu ,  Hiroyuki Nakamura ,  Tetsuya Tsurunari ,  Joji Fujiwara ,  Hidekazu Nakanishi

IPC分类号： H01L41/047

CPC分类号： H03H9/25 ,  H01L41/047 ,  H03H9/02818 ,  H03H9/02992

摘要： An elastic wave element includes a piezoelectric substrate, an IDT electrode, and a first dielectric film. The IDT electrode includes a first bus bar electrode, a second bus bar electrode, first electrode fingers, and second electrode fingers. The piezoelectric substrate includes a bus bar electrode region, an alternately disposed region, and an intermediate region. The first dielectric film is formed in at least a part of the intermediate region, and formed of a medium in which acoustic velocity of a transverse wave propagating in the first dielectric film is lower than acoustic velocity of a main elastic wave in the alternately disposed region.

摘要翻译： 弹性波元件包括压电基片，IDT电极和第一电介质膜。 IDT电极包括第一母线电极，第二母线电极，第一电极指和第二电极指。 压电基板包括汇流条电极区域，交替设置的区域和中间区域。 第一电介质膜形成在中间区域的至少一部分中，并且由在第一电介质膜中传播的横波的声速低于交替设置区域中的主弹性波的声速的介质形成 。

公开(公告)号：US09136458B2

公开(公告)日：2015-09-15

申请号：US14004163

申请日：2012-03-05

申请人： Tomoya Komatsu ,  Hiroyuki Nakamura ,  Tetsuya Tsurunari ,  Joji Fujiwara ,  Hidekazu Nakanishi

发明人： Tomoya Komatsu ,  Hiroyuki Nakamura ,  Tetsuya Tsurunari ,  Joji Fujiwara ,  Hidekazu Nakanishi

IPC分类号： H03H9/25 ,  H03H9/42 ,  H01L41/047 ,  H03H9/02

CPC分类号： H03H9/25 ,  H01L41/047 ,  H03H9/02818 ,  H03H9/02992

摘要： An elastic wave element includes a piezoelectric substrate, an IDT electrode, and a first dielectric film. The IDT electrode includes a first bus bar electrode, a second bus bar electrode, first electrode fingers, and second electrode fingers. The piezoelectric substrate includes a bus bar electrode region, an alternately disposed region, and an intermediate region. The first dielectric film is formed in at least a part of the intermediate region, and formed of a medium in which acoustic velocity of a transverse wave propagating in the first dielectric film is lower than acoustic velocity of a main elastic wave in the alternately disposed region.

摘要翻译： 弹性波元件包括压电基片，IDT电极和第一电介质膜。 IDT电极包括第一母线电极，第二母线电极，第一电极指和第二电极指。 压电基板包括汇流条电极区域，交替设置的区域和中间区域。 第一电介质膜形成在中间区域的至少一部分中，并且由在第一电介质膜中传播的横波的声速低于交替设置区域中的主弹性波的声速的介质形成 。