公开(公告)号：US20190066909A1

公开(公告)日：2019-02-28

申请号：US16173873

申请日：2018-10-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinji OTANI ,  Masaki TSUTSUMI ,  Yoshinori UEDA ,  Hayami KUDO

IPC: H01F27/29 ,  H01L41/047 ,  H01C7/00 ,  H01C1/14 ,  H01G4/40 ,  H01G4/33 ,  H01G4/252 ,  H01G4/236 ,  H01G4/232 ,  H01G4/008 ,  H01F41/02 ,  H01F27/28 ,  H01F27/255 ,  H01F17/04 ,  H01F17/00 ,  H01F1/03 ,  H01C17/28 ,  H01C7/18 ,  H05K1/16

Abstract: An electronic component includes a composite body made of a composite material of a resin material and a metal powder; and a metal film disposed on an outer surface of the composite body. The metal film is in contact with the resin material and the metal powder of the composite body, and an average particle diameter of crystals of the metal film contacting the resin material is 60% or more and 120% or less of an average particle diameter of crystals of the metal film contacting the metal powder.

公开(公告)号：US20170162319A1

公开(公告)日：2017-06-08

申请号：US15298577

申请日：2016-10-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinji OTANI ,  Masaki TSUTSUMI ,  Yoshinori UEDA ,  Hayami KUDO

IPC: H01F27/29 ,  H01F1/03 ,  H01F27/28 ,  H01F41/02 ,  H01L41/047 ,  H01G4/40 ,  H01C7/00 ,  H01C17/28 ,  H01G4/008 ,  H01F27/255 ,  H01G4/252

CPC classification number: H01F27/29 ,  H01C1/14 ,  H01C7/008 ,  H01C7/18 ,  H01C17/28 ,  H01F1/0306 ,  H01F17/0013 ,  H01F17/0033 ,  H01F17/04 ,  H01F27/255 ,  H01F27/2804 ,  H01F41/0206 ,  H01F2017/048 ,  H01G4/008 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/236 ,  H01G4/252 ,  H01G4/33 ,  H01G4/40 ,  H01L41/0477 ,  H05K1/165

Abstract: An electronic component includes a composite body made of a composite material of a resin material and a metal powder; and a metal film disposed on an outer surface of the composite body. The metal film is in contact with the resin material and the metal powder of the composite body, and an average particle diameter of crystals of the metal film contacting the resin material is 60% or more and 120% or less of an average particle diameter of crystals of the metal film contacting the metal powder.

公开(公告)号：US20200152387A1

公开(公告)日：2020-05-14

申请号：US16678074

申请日：2019-11-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Syunsuke TAKEUCHI ,  Yusuke ARAKAWA ,  Masaki TSUTSUMI

IPC: H01G4/232 ,  H01G4/248 ,  H01G4/30

Abstract: A ceramic electronic component includes a ceramic body having first and second end surfaces facing each other, first and second side surfaces facing each other, first and second principal surfaces facing each other, and also includes outer electrodes each of which is provided on at least one portion of a corresponding one of the first and second end surfaces of the ceramic body. Each of the outer electrodes includes an underlying electrode layer provided on at least one portion of a corresponding one of the first and second end surfaces of the ceramic body and also includes a plating layer provided on a corresponding one of the underlying electrode layers and on a corresponding one of regions different from the underlying electrode layers.

公开(公告)号：US20210036211A1

公开(公告)日：2021-02-04

申请号：US16928024

申请日：2020-07-14

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi OSAWA ,  Masaki TSUTSUMI ,  Masahiro FUKUSHIMA

IPC: H01L41/187 ,  H01L41/047 ,  H01L41/09

Abstract: An acoustic wave device includes a piezoelectric substrate made of LiNbO3 or LiTaO3 and including first and second main surfaces that face each other, a functional electrode provided on the first main surface of the piezoelectric substrate to excite acoustic waves, and a Li2CO3 layer provided on the second main surface of the piezoelectric substrate.

公开(公告)号：US20230225215A1

公开(公告)日：2023-07-13

申请号：US18122156

申请日：2023-03-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takashi OSAWA ,  Masaki TSUTSUMI ,  Masahiro FUKUSHIMA

IPC: H01L41/00

CPC classification number: H10N30/8542 ,  H10N30/874 ,  H10N30/2047

Abstract: An acoustic wave device includes a piezoelectric substrate made of LiNbO3 or LiTaO3 and including first and second main surfaces that face each other, an IDT electrode provided on the first main surface of the piezoelectric substrate, and a Li2CO3 layer provided on the second main surface of the piezoelectric substrate.

公开(公告)号：US20200066449A1

公开(公告)日：2020-02-27

申请号：US16666177

申请日：2019-10-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masaki TSUTSUMI ,  Tatsuo KUNISHI

IPC: H01G4/232 ,  H01G4/12 ,  H01G4/30 ,  C25D5/54

Abstract: A method for manufacturing a ceramic electronic component in which a plated electrode can be formed in a region of the surface of a ceramic base body formed of a titanium-containing metal oxide. The method includes preparing a ceramic base body containing a titanium-containing metal oxide, forming a low-resistance section by modifying the metal oxide through irradiation of part of a surface layer portion of the ceramic base body with a pulse laser with a peak power density of 1×106 W/cm2 to 1×109 W/cm2 and a frequency of 500 kHz or less, and forming an electrode on the low-resistance section by electroplating. The laser irradiation generates an O defect in a titanium-containing metal oxide, such as BaTiO3 to form an n-type semiconductor. Since this semiconductor section has a lower resistance value than the metal oxide, plating metal can be selectively deposited by electroplating.