Patents Assigned to Taiyo Yuden Co., Ltd.
  • Patent number: 10304626
    Abstract: A multilayer ceramic capacitor includes: a multilayer structure in which dielectric layers and internal electrode layers are alternately stacked, the plurality of internal electrode layers being alternately exposed to a first edge face and a second edge face; and side margin regions that cover edge portions to which the plurality of internal electrode layers extend toward two side faces and have a structure in which a first ceramic layer and a second ceramic layer are alternately stacked in a stacking direction of the internal electrode layer and the dielectric layer, an amount of a second-phase of the first ceramic layer being larger than that of the second ceramic layer, a main component of the second-phase being SiO2 or a combination of SiO2 and B2O3, wherein a content ratio of the second-phase of the first ceramic layer is 15% or more and 45% or less.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: May 28, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Shusaku Ueda
  • Patent number: 10304601
    Abstract: In an embodiment, a magnetic body includes: multiple soft magnetic alloy grains 11, 12 each containing Fe, element L (where element L is Si, Zr or Ti), and element M (where Element M is an element other than Si, Zr, and Ti, and which oxidizes more easily than Fe); oxide films 21, 22 covering the soft magnetic alloy grains, respectively; a bonding material 30 constituted by an oxide that exists separately from the oxide films 21 (21A, 21B), 22 (22A, 22B); first bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the oxide films 21, 22; and second bonds where adjacent soft magnetic alloy grains 11, 12 are bonded together via the bonding material 30, without the oxide films 21, 22 that respectively cover these grains making direct contact with each other.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: May 28, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Atsushi Tanada
  • Patent number: 10304613
    Abstract: In an embodiments, a coil component 10 is constituted by a drum core 20, a ring core 30, and a resin base 70. A metal plate is embedded in the resin base 70, terminal electrodes 50A, 50B are exposed on a mounting surface side, and connecting parts 52A, 52B internally connected with the terminal electrodes 50A, 50B are pulled out from side surfaces 74A, 74B of the resin base 70. A coating 44 is laser-stripped from lead parts 46A, 46B at both ends of the winding wire 40 wound around a winding shaft 22 of the drum core 20. An end of the conductive wire 42, from which the coating 44 is stripped, is sandwiched by the connecting parts 52A, 52B and securing parts 54A, 54B, and joined together by laser irradiation, forming joining parts 56A, 56B which are separated from the coating end 45.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: May 28, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Takanori Yoshizawa, Kenji Watanabe
  • Patent number: 10297382
    Abstract: One object is to provide a coil element capable of enhancing reliability of joint strength of a coil conductor wire, while achieving a reduction in resistance and a size reduction. A coil element includes a core member, a coil conductor wire, and a terminal electrode. The core member has a columnar portion. The coil conductor wire has a coil portion wound on the columnar portion and a flat-shaped connection end portion provided in each of both end portions of the coil portion. The terminal electrode has an electrode layer and a joint layer. The electrode layer is formed on a surface of the core member and opposed to the connection end portion in its thickness direction. The joint layer includes a cavity portion locally provided between the connection end portion and the electrode layer and joins the connection end portion and the electrode layer to each other.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: May 21, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Hirotaka Wakabayashi
  • Patent number: 10297388
    Abstract: In an embodiment, one length-direction end of each first internal electrode layer 111a is connected to the first conductor layer 112 of the capacitor body 110 over a connection width equivalent to the width of each first internal electrode layer 111a, while the other length-direction end of each second internal electrode layer 111b is connected to the second conductor layer 113 over a connection width equivalent to the width of each second internal electrode layer 111b. One height-direction end of the first conductor layer 112 is connected to the first external electrode 120 over a connection width equivalent to the width of the first conductor layer 112, while one height-direction end of the second conductor layer 113 is connected to the second external electrode 130 over a connection width equivalent to the width of the second conductor layer 113.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: May 21, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Yoichi Kato
  • Publication number: 20190149123
    Abstract: An acoustic wave device includes: a first substrate having a first surface and a side surface; an acoustic wave resonator located on the first surface of the first substrate; and a first insulator film that covers the acoustic wave resonator and is in contact with at least a part, which is located closer to the first surface, of the side surface of the first substrate.
    Type: Application
    Filed: November 5, 2018
    Publication date: May 16, 2019
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Takeshi SAKASHITA
  • Publication number: 20190149129
    Abstract: An acoustic wave device includes: a support substrate; a single piezoelectric substrate that is located on the support substrate and is single-crystal; first electrodes located on a first surface of the piezoelectric substrate; second electrodes located on a second surface of the piezoelectric substrate; and an acoustic mirror that is bonded on the support substrate, is located between the support substrate and the first electrodes in resonance regions where the first electrodes and the second electrodes face each other across at least a part of the piezoelectric substrate, is not located between the support substrate and the first electrodes in at least a part of a region between the resonance regions, and reflects an acoustic wave propagating through the piezoelectric substrate.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 16, 2019
    Applicant: TAIYO YUDEN CO., LTD.
    Inventor: Masanori UEDA
  • Patent number: 10291196
    Abstract: A method for manufacturing an acoustic wave device includes: forming an altered domain in a supporting substrate by irradiating the supporting substrate with a laser light, a piezoelectric substrate being joined to an upper surface of the supporting substrate; forming a groove on an upper surface of the piezoelectric substrate so as to overlap with the altered domain; and cutting the supporting substrate at the groove.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: May 14, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventor: Yohei Shimizu
  • Patent number: 10291206
    Abstract: An acoustic wave device includes: a piezoelectric thin film resonator that is connected between a first node and a second node; and a resonant circuit that is connected in parallel with the piezoelectric thin film resonator between the first node and the second node, and has a resonant frequency f0 that meets a condition of 2×fa×0.92?f0 where fa represents an antiresonant frequency of the piezoelectric thin film resonator.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 14, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Taisei Irieda, Yoshio Satoh, Tokihiro Nishihara, Shinji Taniguchi
  • Patent number: 10290424
    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 are alternately exposed to two edge 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 edge faces; wherein: the pair of external electrode 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 the ground layer includes Mo.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 14, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Atsuhiro Yanagisawa, Yoshinori Shibata, Mikio Tahara
  • Patent number: 10290858
    Abstract: One object is to provide an electric storage element for electrochemical devices that can prevent fall of active material powder from an outer edge of an active material layer, thereby preventing functional disorders due to the fall of the active material powder. In accordance with one aspect, an electric storage element has laminated structure wherein active material layers (first active material layer and second active material layer) are placed between an ion permeable layer and a first collector layer and between the ion permeable layer and a second collector layer. The active material layers have a smaller outline than the ion permeable layer and are tightly enclosed with insulating layers (first insulating layer and second insulating layer) filling the respective ambient regions corresponding to the difference in outlines from the ion permeable layer.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: May 14, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Naoto Hagiwara, Katsuei Ishida
  • Patent number: 10284181
    Abstract: A variable capacitor includes: capacitors connected in series between first and second signal terminals, capacitances of the capacitors varying in accordance with variable voltage applied to a variable terminal; a first resistor connected between a first node between adjacent capacitors of the capacitors and the variable terminal, a second resistor connected between a second node between adjacent capacitors of the capacitors and a fixed terminal applied with fixed voltage, and a third resistor connected between a third node and the fixed terminal, the third node being located between the first and/or second signal terminal and a capacitor located closest to the first and/or signal terminal among the capacitors, wherein a resistance of the second resistor is less than 1 and ½ or greater with respect to a resistance of the third resistor, and the resistance of the second resistor is not equal to a resistance of the first resistor.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: May 7, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Masashi Natsume, Tomokazu Ikenaga
  • Patent number: 10276296
    Abstract: A coil component includes: a pillar part; first and second rectangular planar parts, each having long sides L, short sides S, and thickness T; a coil formed around the pillar part; two terminal electrodes electrically connected to both ends of the coil; and an outer sheath containing magnetic grains and resin material and covering the coil at least partially; wherein the thickness PL in the L direction and thickness PS in the S direction, of the outer sheath, in a section cut across the center of the pillar part and in parallel with the LS planes, satisfy the relationship of PL<PS.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 30, 2019
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Hidenori Aoki, Masashi Kuwahara, Hideki Ogawa
  • Publication number: 20190123771
    Abstract: A multiplexer includes: a low-pass filter that is connected between a common terminal and a first terminal and is formed of one or more first inductors and one or more first capacitors; a bandpass filter that is connected between the common terminal and a second terminal, has a passband higher than a passband of the low-pass filter, and is formed of one or more second inductors and one or more second capacitors; a high-pass filter that is connected between the common terminal and a third terminal, has a passband higher than the passband of the bandpass filter, and is formed of one or more third inductors and one or more third capacitors; and a fourth inductor that has a first end coupled to the common terminal and a second end coupled to the high-pass filter.
    Type: Application
    Filed: October 3, 2018
    Publication date: April 25, 2019
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Hirotaka TAKEUCHI, Toshiyuki SAITO, Shinya OSAKABE
  • Patent number: 10270424
    Abstract: An acoustic wave resonator includes: a piezoelectric substrate; an IDT located on the piezoelectric substrate and including comb-shaped electrodes facing each other, each of the comb-shaped electrodes including: electrode fingers exciting an acoustic wave; and a bus bar to which the electrode fingers are connected; a dielectric film located on the piezoelectric substrate in an overlap region, where the electrode fingers of one of the comb-shaped electrodes and the electrode fingers of the other overlap, so as to cover the electrode fingers; and an additional film located on the dielectric film in the overlap region and having a density greater than that of the dielectric film, and of which a film thickness in edge regions corresponding to both edges of the overlap region in an extension direction of the electrode fingers is greater than a film thickness in a central region sandwiched between the edge regions in the overlap region.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 23, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Fumiya Matsukura, Kentaro Nakamura, Takashi Matsuda, Jun Tsutsumi, Junichi Hamasaki
  • Patent number: 10270414
    Abstract: An acoustic wave device includes: a support substrate; a piezoelectric substrate that is jointed on the support substrate; a plurality of acoustic wave elements that are provided on the piezoelectric substrate; and an interconnection line that is provided on the piezoelectric substrate and couples the plurality of acoustic wave elements, wherein: the piezoelectric substrate of a first area, on which the plurality of acoustic wave elements are provided, is remained; the piezoelectric substrate of a second area, on which the interconnection line is provided, is remained; the piezoelectric substrate of a third area is for cutting the support substrate; and the piezoelectric substrates of a fourth area is other than the first area, the second area and the third area, the fourth area having a fifth area in which at least a part of the piezoelectric substrate is removed.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 23, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Takuma Kuroyanagi, Kaoru Sakinada
  • Patent number: 10270422
    Abstract: A piezoelectric thin film resonator includes: a substrate; a piezoelectric film that is located on the substrate; a lower electrode that is located on the substrate through an air gap, makes contact with the piezoelectric film, and includes a thin film part and a thick film part in which a distance from the air gap to a surface making contact with the piezoelectric film is greater than that of the thin film part in a region overlapping with the air gap in plan view; and an upper electrode that is located on an opposite surface of the piezoelectric film from a surface making contact with the lower electrode.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: April 23, 2019
    Assignee: TAIYO YUDEN CO., LTD
    Inventor: Takeshi Sakashita
  • Patent number: 10269498
    Abstract: A multi-layer ceramic capacitor includes a body. The body includes a capacitance forming unit, a cover, and a side margin. The capacitance forming unit includes ceramic layers laminated in a first direction and internal electrodes disposed between the ceramic layers. The cover covers the capacitance forming unit from the first direction. The side margin covers the capacitance forming unit from a second direction orthogonal to the first direction. The capacitance forming unit includes a surface layer portion adjacent to the cover. Ends of the internal electrodes in the second direction in the surface layer portion are curved toward the cover.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: April 23, 2019
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Yoichi Kato
  • Patent number: 10270425
    Abstract: An acoustic wave resonator includes: a piezoelectric substrate; and a pair of grating electrodes that is formed on the piezoelectric substrate, one of the pair of grating electrodes including a plurality of first electrode fingers having electric potentials equal to each other, another of the pair of grating electrodes including a plurality of second electrode fingers having electric potentials that differ from the electric potentials of the plurality of first electrode fingers and are equal to each other, two second electrode fingers of the plurality of second electrode fingers being located between at least a pair of adjacent first electrode fingers of the plurality of first electrode fingers, Pg differing from ?/4 where ? represents a wavelength of an acoustic wave excited by the plurality of first electrode fingers and the plurality of second electrode fingers and Pg represents a distance between centers of the two second electrode fingers.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: April 23, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Masafumi Iwaki, Takashi Matsuda, Jun Tsutsumi
  • Publication number: 20190115901
    Abstract: A ladder-type filter includes: a first piezoelectric thin film resonator including a first lower electrode, a first piezoelectric film, a first upper electrode, and an insertion film inserted between the first lower and upper electrodes, the insertion film being located in an outer peripheral region of a first resonance region; a second piezoelectric thin film resonator including a second lower electrode, a second piezoelectric film, and a second upper electrode, the second piezoelectric thin film resonator having no insertion film between the second lower and upper electrodes in a second resonance region; a series resonator, at least one of the series resonator being a first resonator that is one of the first and second piezoelectric thin film resonators, and a parallel resonator, at least one of the parallel resonator being a second resonator that is another of the first and second piezoelectric thin film resonators.
    Type: Application
    Filed: September 17, 2018
    Publication date: April 18, 2019
    Applicant: TAIYO YUDEN CO., LTD.
    Inventors: Yuki TAKAHASHI, Hiroomi KANEKO, Hiroshi KAWAKAMI, Shinji TANIGUCHI