公开(公告)号：US20230317646A1

公开(公告)日：2023-10-05

申请号：US18329078

申请日：2023-06-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki YAMAMOTO

IPC: H01L23/66

CPC classification number: H01L23/66 ,  H01L2223/6677

Abstract: One possible benefit of the present disclosure is to reduce an amount of solder for the connection between a ground terminal and a ground layer to flow out to the ground layer, while strengthening a ground between two RF terminals. A high-frequency module includes a mounting substrate and a filter. The filter includes a first RF terminal, a second RF terminal, and a ground terminal. The ground terminal is located between the first RF terminal and the second RF terminal in plan view in a thickness direction of the mounting substrate. The mounting substrate has a ground layer on a first principal surface. The ground terminal is formed by a solder bump and connected to the ground layer. The ground layer has a through-hole 115 in contact with the ground terminal.

公开(公告)号：US20160027990A1

公开(公告)日：2016-01-28

申请号：US14871805

申请日：2015-09-30

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroyuki YAMAMOTO ,  Masaru ASAI

IPC: H01L41/053 ,  H01L41/047

CPC classification number: H01L41/053 ,  H01L41/0472 ,  H03H9/02157 ,  H03H9/0509 ,  H03H9/1021 ,  H03H9/19

Abstract: A crystal vibration device where a crystal unit is supported on a case substrate in a cantilever manner by first and second conductive adhesive layers. The crystal unit has a length direction and is formed using a rectangular-plate-shaped crystal substrate and A>4.30t+0.16, where A (mm) represents a shorter distance among distances between a central axis of the crystal substrate and end portions of the first and second conductive adhesive layers on a central axis side, and t (μm) represents a thickness of the crystal substrate.

Abstract translation: 一种晶体振动装置，其中晶体单元以悬臂方式由第一和第二导电粘合剂层支撑在壳体基板上。 晶体单元具有长度方向，并且使用矩形板状晶体基板形成，并且A> 4.30t + 0.16，其中A（mm）表示晶体基板的中心轴与端部的距离之间的较短距离 第一和第二导电粘合剂层在中心轴线侧，t（μm）表示晶体基板的厚度。

公开(公告)号：US20240187033A1

公开(公告)日：2024-06-06

申请号：US18442125

申请日：2024-02-15

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroki SHOUNAI ,  Yukiya YAMAGUCHI ,  Atsushi HORITA ,  Hiroyuki YAMAMOTO ,  Yukiko MATSUDA

IPC: H04B1/40

CPC classification number: H04B1/40

Abstract: A radio frequency module includes a module substrate including a first main surface facing a second main surface, and a power amplifier including first and second power amplification devices and an output transformer, which includes a primary coil and a secondary coil, and a capacitor connected to the output transformer. One end of the primary coil is connected to the first amplification device. Another end of the primary coil is connected to the second amplification device. One end of the secondary coil is connected to an output terminal. The output transformer is disposed in or on the module substrate and is disposed closer to one of the first and second main surfaces than the other. The capacitor is disposed in or on the other of the first and second main surfaces and is disposed to overlap the output transformer when the module substrate is viewed in a plan view.

公开(公告)号：US20220158618A1

公开(公告)日：2022-05-19

申请号：US17586950

申请日：2022-01-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shigeo OJIMA ,  Masaki USHIRO ,  Hiroyuki YAMAMOTO

IPC: H03H9/19 ,  H03H3/02 ,  H03H9/10 ,  H01L41/18

Abstract: A crystal vibrator that includes a crystal vibration element having a crystal piece and a pair of electrodes that face each other with the crystal piece interposed therebetween; and a holder that accommodates the crystal vibration element. At least one electrode of the pair of electrodes includes an upper layer containing gold and a lower layer between the crystal piece and the upper layer and containing chromium. A surface of the at least one electrode contains a plurality of crystal grains composed of gold and a chromium compound along grain boundaries between the plurality of crystal grains. An area percentage of the plurality of crystal grains is equal to or more than 35% and equal to or less than 60% when the surface of the at least one electrode is viewed in a plan view thereof.