公开(公告)号：US20180269849A1

公开(公告)日：2018-09-20

申请号：US15983322

申请日：2018-05-18

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Katsuya MATSUMOTO ,  Masato NOMIYA

IPC: H03H9/02 ,  H03H9/10 ,  H03H9/145 ,  H03H9/25 ,  H03H9/64

CPC classification number: H03H9/02834 ,  H03H9/02559 ,  H03H9/02637 ,  H03H9/0547 ,  H03H9/1071 ,  H03H9/1092 ,  H03H9/145 ,  H03H9/25 ,  H03H9/6483

Abstract: An elastic wave device includes an IDT electrode on a second main surface of an element substrate that includes a piezoelectric layer, a support layer on the second main surface and surrounding the IDT electrode, a cover member on the support layer, and routing wiring lines extending from the second main surface of the element substrate onto side surfaces of the element substrate.

公开(公告)号：US20180212581A1

公开(公告)日：2018-07-26

申请号：US15933506

申请日：2018-03-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Katsuya MATSUMOTO

IPC: H03H3/08 ,  H03H9/145 ,  H03H9/25 ,  H03H9/02 ,  H03H9/46

CPC classification number: H03H3/08 ,  H03H9/02535 ,  H03H9/02622 ,  H03H9/02858 ,  H03H9/145 ,  H03H9/25 ,  H03H9/46

Abstract: An elastic wave device includes an IDT electrode on a piezoelectric substrate, in which the IDT electrode includes first electrode fingers and second electrode fingers, where a portion in which the first electrode fingers and the second electrode fingers overlap with each other in an elastic wave propagation direction is defined as an intersection region including in a direction in which the first and second electrode fingers extend, a center region located on a center side and first and second edge regions respectively located on both sides of the center region, in the first and second edge regions, grooves defining recess portions are provided on the piezoelectric substrate, the first and second electrode fingers are provided inside of the grooves as the recess portions and are disposed on the piezoelectric substrate in the grooves.

公开(公告)号：US20190199324A1

公开(公告)日：2019-06-27

申请号：US16212801

申请日：2018-12-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Katsuya MATSUMOTO ,  Yasuyuki IDA

IPC: H03H9/54 ,  H03H9/205 ,  H03H9/13 ,  H03H9/70 ,  H03H9/05

CPC classification number: H03H9/545 ,  H01L41/1873 ,  H03H9/05 ,  H03H9/0547 ,  H03H9/1064 ,  H03H9/13 ,  H03H9/205 ,  H03H9/70

Abstract: A composite electronic component includes a first acoustic wave filter, a second acoustic wave filter, a spacer layer, and a switch. The second acoustic wave filter faces the first acoustic wave filter in a first direction. The switch switches an ON state and an OFF state of the first acoustic wave filter and an ON state and an OFF state of the second acoustic wave filter. A first functional electrode and a second functional electrode are located in a hollow space and face each other in the first direction. The switch brings at least one of the first acoustic wave filter and the second acoustic wave filter into the OFF state.

公开(公告)号：US20190288669A1

公开(公告)日：2019-09-19

申请号：US16429117

申请日：2019-06-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Katsuya MATSUMOTO ,  Yuji TOYOTA

IPC: H03H9/25 ,  H01L25/00 ,  H01L41/08 ,  H01L41/083 ,  H03H9/02 ,  H03H9/05 ,  H03H9/10 ,  H01L23/00

Abstract: In a composite component, a semiconductor device is stacked on an elastic wave device. Side electrodes extend from at least one side surface of a piezoelectric substrate of the elastic wave device to at least a side surface of a semiconductor substrate of the semiconductor device and are connected to an IDT electrode and functional electrodes. The side electrodes extend onto at least one of a second main surface of the piezoelectric substrate and a second main surface of the semiconductor substrate.