Patents Assigned to Taiyo Yuden Co., Ltd.
  • Publication number: 20220140224
    Abstract: An acoustic wave device includes a first substrate having first and second surfaces opposite from each other, and side surfaces connecting the first and second surfaces, a first acoustic wave element disposed on the first surface of the first substrate, a second substrate that is provided over the first surface of the first substrate and over the first acoustic wave element and has a first air gap between the second and first substrates, a second acoustic wave element disposed on the second substrate, a ground terminal disposed on the second surface of the first substrate, a first metal layer provided between the first and second acoustic wave elements and located in the first air gap, and a second metal layer that covers half or more of a total area of the side surfaces of the first substrate and electrically connects the first metal layer and the ground terminal.
    Type: Application
    Filed: October 13, 2021
    Publication date: May 5, 2022
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Jyunichi HAMASAKI, Kazushige HATAKEYAMA
  • Patent number: 11319252
    Abstract: A ceramic composition according to an embodiment of the present invention contains: a main phase component represented by CaMgSi2O6 or Ba4(Re(1-x), Bix)9.33Ti18O54; and an additive component containing a Li component and a B component, An observation field, a part of a sectional surface of the ceramic composition, is divided into a plurality of unit observation regions. Among all the unit observation regions, those containing no or little sintering agent component are referred to as the main crystal regions. An area percentage of main crystal regions relative to the observation field is 30% or more, the main crystal regions being the unit observation regions containing 0.5% or less by area of the additive component.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: May 3, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Takashi Nakajima
  • Patent number: 11315743
    Abstract: An electrochemical device includes: an electricity storage device that includes positive and negative electrodes stacked via a separator and wound, and lead plates electrically connected to the positive or negative electrode; a connection plate having a first surface on an electricity storage device side and a second surface opposite to the first surface, the lead plates being stacked and welded to the first surface; and a rupture disc connected to the second surface, the lead plates being welded to the connection plate at first and second welding portions on the first surface separated from each other, a lead plate on a connection plate side being welded to the connection plate at the first and second welding portions, a lead plate on a side opposite to the connection plate being welded to the connection plate at the first welding portion and unwelded to the connection plate at the second welding portion.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: April 26, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Katsunori Yokoshima, Hiroto Mori
  • Patent number: 11315721
    Abstract: A coil component according to one embodiment of the present invention includes a magnetic base body, a first external electrode, a second external electrode, a coil conductor extending around a coil axis, a first insulator, and a second insulator. The first insulator is provided between a first flange portion of the first external electrode and a first coil pattern of the coil conductor, and the second insulator is provided between a second flange portion of the second external electrode and a second coil pattern of the coil conductor.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 26, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Ichiro Yokoyama
  • Patent number: 11315731
    Abstract: A ceramic electronic device includes a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the plurality of internal electrode layers being exposed to at least one of a first end face and a second end face of the multilayer chip, the first end face being opposite to the second end face, external electrodes respectively provided on the first end face and the second end face, and a water repellent agent that is provided on at least one face of four faces of a rectangular parallelepiped shape of the multilayer chip other than the first and second end faces, is spaced from the first and second external electrodes, and extends in a direction intersecting with a direction in which the external electrodes face with each other.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: April 26, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kiyoshiro Yatagawa, Satoshi Kobayashi
  • Patent number: 11309481
    Abstract: A multi-layer piezoelectric ceramic component includes: a piezoelectric ceramic body having a cuboid shape, having upper and lower surfaces facing in a thickness direction, first and second end surfaces facing in a length direction, and a pair of side surfaces facing in a width direction, and including first and second regions; first internal electrodes in the first region; second internal electrodes in the second region; third internal electrodes in the first and second regions; a first terminal electrode formed on the first end surface and electrically connected to the first internal electrodes; a second terminal electrode formed on the first end surface and electrically connected to the second internal electrodes; and a third terminal electrode formed on the second end surface and electrically connected to the third internal electrodes, the first, second, and third internal electrodes each having a width equal to a distance between the pair of side surfaces.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: April 19, 2022
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Sumiaki Kishimoto, Hiroyuki Shimizu, Tomohiro Harada, Takayuki Goto, Yukihiro Konishi
  • Patent number: 11309868
    Abstract: A multiplexer includes: a first terminal; a second terminal; a third terminal; a first filter connected between the first and second terminals, including a first capacitor, a first inductor, and one or more first acoustic wave resonators, and having a first passband; a second filter connected between the first and third terminals, including a second capacitor, a second inductor, and one or more second acoustic wave resonators, and having a second passband higher than the first passband; a substrate having a surface on which at least one first acoustic wave resonator of the one or more first acoustic wave resonators and at least one second acoustic wave resonator of the one or more second acoustic wave resonators are located; and a metal structure located on the surface and located between the at least one first acoustic wave resonator and the at least one second acoustic wave resonator.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: April 19, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Eiji Kuwahara
  • Patent number: 11309134
    Abstract: A capacitor according to one embodiment of the present invention relates to a thin film capacitor including a base member and a MIM structure provided on the base member. The thin film capacitor includes a first external electrode and a second external electrode that are electrically connected to the MIM structure. The base member has a plurality of through holes penetrating between a first surface and a second surface of the base member. The MIM structure includes a first portion extending along the first surface of the base member, a second portion extending along the second surface of the base member, and a third portion provided in the plurality of through holes of the base member so as to connect the first portion to the second portion.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 19, 2022
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Riki Suemasa, Takayuki Sekiguchi
  • Patent number: 11296272
    Abstract: A multilayer piezoelectric element includes a ceramic base body, a pair of external electrodes, multiple internal electrodes, and surface electrodes. The ceramic base body is formed by a piezoelectric ceramic. The pair of external electrodes cover a pair of end faces. The multiple internal electrodes are stacked inside the ceramic base body along a thickness direction crossing at right angles with a longitudinal direction, and connected alternately to the pair of external electrodes in the thickness direction. The surface electrodes are provided on a pair of principal faces, respectively, and are each connected to the external electrode different from the one to which the internal electrode adjacent in the thickness direction is connected. The pair of external electrodes have a higher porosity than the surface electrodes.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 5, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Sumiaki Kishimoto, Hiroyuki Shimizu, Tomohiro Harada, Yukihiro Konishi
  • Patent number: 11290056
    Abstract: A solar power generation fault diagnosis device includes one or more processors configured to perform the following: receiving signals indicating an electrical quantity output from a solar cell to acquire quantity information indicating the electrical quantity output from the solar cell; calculating a first quantity value relating to the electrical quantity based on the quantity information; implementing a low-pass filter unit so as to output a second quantity value from the first quantity value; determining a state of the solar cell based on a result of comparison between the first quantity value and the second quantity value; and outputting the determined state of the solar cell.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: March 29, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Kazuo Asanuma, Norio Kurisu
  • Patent number: 11287483
    Abstract: One object is to provide a method and a device for calculating core loss accurately. A calculation method includes: calculating core loss characteristics of a magnetic part having no superimposed direct current flowing therein, the magnetic part being made of one or more magnetic materials; and calculating a value of core loss of the magnetic part by multiplying the core loss characteristics by a rate of change of the core loss of the magnetic part caused by a superimposed direct current.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: March 29, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Azusa Tomita, Yasunori Tanahashi
  • Publication number: 20220094330
    Abstract: An acoustic wave device includes a support substrate having an uneven surface, a piezoelectric layer provided on the uneven surface of the support substrate, an electrode that excites an acoustic wave in the piezoelectric layer, and an insulating layer that is provided between the uneven surface of the support substrate and the piezoelectric layer, and has an air gap located in a recess part of the uneven surface.
    Type: Application
    Filed: August 31, 2021
    Publication date: March 24, 2022
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Shinji YAMAMOTO, Michio MIURA
  • Patent number: 11282641
    Abstract: A ceramic electronic device includes a multilayer structure in which each of dielectric layers and each of internal electrode layers are alternately stacked, wherein a main component of the dielectric layers is (Ba, Sr, Ca)(Zr, Ti)O3, wherein a Ba concentration and a Ca concentration have variation in at least one of crystal grains in the dielectric layers.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: March 22, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Tetsuo Shimura, Tomoya Hagiwara, Yasuyuki Inomata
  • Publication number: 20220084752
    Abstract: A ceramic electronic device includes a multilayer structure having a parallelepiped shape in which a plurality of dielectric layers and a plurality of internal electrode layers are alternately stacked in a vertical direction, the plurality of internal electrode layers being alternately exposed to two end faces of the parallelepiped shape. A side margin section is a section covering edges of the plurality of internal electrode layers in an extension direction toward two side faces of the parallelepiped shape. The side margin section has a structure in which a plurality of dielectric layers, each containing a ceramic as a main component, and a plurality of conductive layers, each containing a metal as a main component, are alternately stacked in the vertical direction. The plurality of conductive layers are respectively spaced and separated from the plurality of internal electrode layers.
    Type: Application
    Filed: June 30, 2021
    Publication date: March 17, 2022
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Yoichi KATO
  • Patent number: 11275105
    Abstract: A test device according to an embodiment of the present invention includes: a first measurement terminal connected to one end of a first coil to be tested; a second measurement terminal connected to another end of the first coil; a direct-current power source connected to the first measurement terminal; a first semiconductor switch connected between the second measurement terminal and a ground; and a drive unit for turning on and off the first semiconductor switch.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: March 15, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yasunori Tanahashi, Hiroyoshi Kobayashi
  • Patent number: 11271542
    Abstract: An acoustic wave device includes: a mounting substrate; a first wiring layer located on an upper surface of the mounting substrate, the first wiring layer including a first bond region and a first connection region connecting with the first bond region and having a thickness substantially equal to a thickness of the first bond region; an element substrate mounted on the mounting substrate; an acoustic wave element located on a lower surface of the element substrate; and a second wiring layer located on the lower surface of the element substrate, the second wiring layer including a second bond region and a second connection region, the second bond region directly bonding with the first bond region of the first wiring layer, the second connection region connecting the acoustic wave element with the second bond region and having a thickness substantially equal to a thickness of the second bond region.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: March 8, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Takashi Yamashita
  • Publication number: 20220068564
    Abstract: An electronic component includes an element body and external electrodes. The element body includes a dielectric and an internal electrode. Each of the external electrodes includes a base layer formed on multiple surfaces of the element body and an electrically-conducting material layer formed on the base layer, the base layer including a metal and co-material particles dispersed in the metal and being connected to the internal electrode. The co-material particles at an interface surface between the base layer and the electrically-conducting material layer have edges covered with the metal at the interface surface. The electrically-conducting material layer is in contact with the co-material particles at the interface surface and the metal covering the edges of the co-material particles at the interface surface.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 3, 2022
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Junichi SHINOZAKI, Toshiki KONDO, Ryosuke HOSHINO, Takahisa FUKUDA
  • Patent number: 11264168
    Abstract: A multilayer ceramic capacitor includes: a multilayer chip having a parallelepiped shape in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked and each of the internal electrode layers is alternately exposed to two end faces of the multilayer chip, a main component of the plurality of dielectric layers being a ceramic; and a pair of external electrodes that are formed on the two end faces; wherein: the pair of external electrodes have a structure in which a plated layer is formed on a ground layer; a main component of the ground layer is a metal or an alloy including at least one of Ni and Cu; and at least a part of a surface of the ground layer on a side of the plated layer includes an interposing substance including Mo.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Haruna Ubukata, Satoko Namiki, Atsuhiro Yanagisawa, Tomonori Yamatoh
  • Patent number: 11264968
    Abstract: A high-frequency device includes: a circuit substrate including dielectric layers that are stacked, wiring patterns located on at least one of the dielectric layers, and a passive element formed of at least one of the wiring patterns, the circuit substrate having a first surface that is a surface of an outermost dielectric layer in a stacking direction of the dielectric layers; a terminal for connecting the high-frequency device to an external circuit, the terminal being located on the first surface and electrically connected to the passive element through a first path in the circuit substrate; and an acoustic wave element located on the first surface and electrically connected to the passive element through a second path in the circuit substrate.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: March 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hideyuki Sekine, Hosung Choo, Makoto Inoue
  • Patent number: 11261132
    Abstract: Ceramic raw material powder includes: a main phase having a perovskite structure, wherein elements acting as a donor and an acceptor are solid-solved in B sites of the perovskite structure, wherein a relationship of (concentration of the element acting as a donor)×(valence of the element acting as a donor?4)<(concentration of the element acting as an acceptor)×(4?valence of the element acting as an acceptor) is satisfied, in a center region of each grain of the ceramic raw material powder, wherein a relationship of (concentration of the element acting as a donor)×(valence of the element acting as a donor?4)>(concentration of the element acting as an acceptor)×(4?valence of the element acting as an acceptor) is satisfied, in a circumference region of each grain of the ceramic raw material powder.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: March 1, 2022
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Katsuya Taniguchi, Tsuyoshi Sogabe