公开(公告)号：US20220254570A1

公开(公告)日：2022-08-11

申请号：US17590541

申请日：2022-02-01

Applicant: TDK CORPORATION

Inventor： Takuma ARIIZUMI ,  Taku MURAKAMI ,  Nobuto MORIGASAKI ,  Toshihiko KANEKO ,  Yasuhiro ITO

IPC: H01G4/12 ,  H01G4/30 ,  C04B35/468

Abstract: A dielectric composition includes a main phase, first segregation phases, and second segregation phases. The main phase includes a main component having a perovskite crystal structure of ABO3 (A is one or more selected from Ba, Sr, and Ca, and B is one or more selected from Ti, Zr, and Hf). The first segregation phases include RE (one or more selected from rare earth elements), A, Si, Ti, and O. The second segregation phases include RE, A, Ti, and O and do not substantially include Si. 0.10

公开(公告)号：US20220194859A1

公开(公告)日：2022-06-23

申请号：US17551633

申请日：2021-12-15

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Yasuhiro ITO ,  Nobuto MORIGASAKI ,  Toshihiko KANEKO ,  Toshihiro IGUCHI

IPC: C04B35/47

Abstract: A dielectric ceramic composition contains dielectric particles containing a main component represented by a composition formula (Ba1-x-ySrxCay)m(Ti1-zZrz)O3 and grain boundaries present between the dielectric particles. The values of m, x, y, and z in the composition formula are all molar ratios. In the composition formula, 0.9≤m≤1.4, 0≤x

公开(公告)号：US20190237264A1

公开(公告)日：2019-08-01

申请号：US16250911

申请日：2019-01-17

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Toshihiko KANEKO ,  Nobuto MORIGASAKI ,  Toshinari TAKAHASHI ,  Yasuhiro ITO

IPC: H01G4/30 ,  H01G4/12 ,  H01G4/008

CPC classification number: H01G4/30 ,  H01G4/008 ,  H01G4/1245

Abstract: The object of the present invention is to provide the multilayer ceramic capacitor having no deterioration of dielectric properties even in case an inhibitor of an internal electrode layer is pushed out to a dielectric layer when sintering. The multilayer ceramic capacitor 1 including a capacitor element body 10 comprising a dielectric layer 2 and an internal electrode layer 3 stacked in an alternating manner, wherein when Za represents Zr concentration of an dielectric particle in a center part 6 of the dielectric layer 2 and Zb represents Zr concentration of a dielectric particle near the internal electrode layer, 0

公开(公告)号：US20170287635A1

公开(公告)日：2017-10-05

申请号：US15466224

申请日：2017-03-22

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Nobuto MORIGASAKI ,  Tatsuya ISHII ,  Takuma ARIIZUMI ,  Shinsuke HASHIMOTO ,  Yasuhiro ITO

IPC: H01G4/12 ,  H01G4/248 ,  C04B35/64 ,  C04B35/49 ,  C04B35/63 ,  C04B35/626 ,  H01G4/30 ,  H01G4/012

CPC classification number: H01G4/1245 ,  C01G25/006 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/6261 ,  C04B35/62675 ,  C04B35/6303 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3203 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3229 ,  C04B2235/3236 ,  C04B2235/3241 ,  C04B2235/3249 ,  C04B2235/3262 ,  C04B2235/3272 ,  C04B2235/3275 ,  C04B2235/3287 ,  C04B2235/3409 ,  C04B2235/3418 ,  C04B2235/652 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6584 ,  C04B2235/662 ,  C04B2235/768 ,  C04B2235/81 ,  C04B2235/96 ,  H01G4/012 ,  H01G4/248 ,  H01G4/30

Abstract: A dielectric ceramic composition having good characteristic even under high electric field intensity, and particularly good IR characteristic and high temperature accelerated lifetime. The present invention is a dielectric ceramic composition comprising, a main component comprising a perovskite type compound shown by a compositional formula (Ba1-x-ySrxCay)m(Ti1-zZrz)O3, a first sub component comprising oxides of a rare earth element, a second sub component as a sintering agent, wherein said dielectric ceramic composition is a complete solid solution particle wherein the rare earth element is solid dissolved to entire dielectric particle, or a core-shell particle having high ratio of the diffusion phase, and comprises the dielectric particle having 5 to 20 atom % of the average concentration of the rare earth element in the diffusion phase, and having uniform concentration distribution of the rare earth element in the diffusion phase.

公开(公告)号：US20160268045A1

公开(公告)日：2016-09-15

申请号：US15064431

申请日：2016-03-08

Applicant: TDK CORPORATION

Inventor： Toshihiko KANEKO ,  Tatsuya FUJINO ,  Nobuto MORIGASAKI ,  Yasuhiro ITO

IPC: H01G4/12 ,  C04B35/468

CPC classification number: H01G4/1227 ,  C04B35/4682 ,  C04B35/488 ,  C04B35/49 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3249 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/5454 ,  C04B2235/6025 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6584 ,  C04B2235/6588 ,  C04B2235/768 ,  C04B2235/79 ,  C04B2235/80 ,  C04B2237/346 ,  C04B2237/68 ,  H01G4/30

Abstract: A dielectric ceramic composition including a main component having a perovskite crystal structure expressed by general formula ABO3, a first sub-component of an oxide of a rare earth element, and a second sub-component of an oxide of Si, and at least dielectric particles having a core-shell structure and segregated particles, in which a concentration of the rare earth element in the segregated particles is two or more times an average concentration of the rare earth element in a shell portion of the dielectric particles having the core-shell structure, and an area of the region occupied by the segregated particles is 5.0% or less and an average of cross-sectional areas of the respective segregated particles is 0.075 μm2 or less in a cross-section obtained by cutting the dielectric ceramic composition.

Abstract translation: 一种电介质陶瓷组合物，其包含具有由通式ABO 3表示的钙钛矿晶体结构的主要成分，稀土元素的氧化物的第一亚成分和Si的氧化物的第二子成分，至少介电粒子 具有核 - 壳结构和偏析粒子，其中分离粒子中的稀土元素的浓度是具有核 - 壳结构的电介质粒子的壳部中的稀土元素的平均浓度的两倍或更多倍 ，并且由偏析粒子占据的区域的面积为5.0％以下，在通过切断电介质陶瓷组合物而得到的截面中，各偏析粒子的截面积的平均值为0.075μm2以下。

公开(公告)号：US20200243239A1

公开(公告)日：2020-07-30

申请号：US16727553

申请日：2019-12-26

Applicant: TDK CORPORATION

Inventor： Takeshi SHIBAYAMA ,  Takashi SUZUKI ,  Takahiro SATO ,  Kenji KOMORITA ,  Tatsuro SUZUKI ,  Yukio TAKAHASHI ,  Hiroyuki TANOUE ,  Yasuhiro ITO

IPC: H01F1/34 ,  C04B35/26

Abstract: A ferrite composition includes a main component and a sub-component. The main component includes 10.0 to 38.0 mol % of a Fe compound in terms of Fe2O3, 3.0 to 11.0 mol % of a Cu compound in terms of CuO, 39.0 to 80.0 mol % (excluding 39.0 mol %) of a Zn compound in terms of ZnO, and a balance of a Ni compound. The sub-component includes 10.0 to 23.0 parts by weight of a Si compound in terms of SiO2, 0 to 3.0 parts by weight (including 0 parts by weight) of a Co compound in terms of Co3O4, and 0.1 to 3.0 parts by weight of a Bi compound in terms of Bi2O3 with respect to 100 parts by weight of the main component.

公开(公告)号：US20200043657A1

公开(公告)日：2020-02-06

申请号：US16511030

申请日：2019-07-15

Applicant: TDK CORPORATION

Inventor： Takuma ARIIZUMI ,  Toshihiko KANEKO ,  Nobuto MORIGASAKI ,  Yasuhiro ITO

IPC: H01G4/12 ,  H01G4/30 ,  H01G4/005 ,  C04B35/468 ,  C04B35/49 ,  C04B35/628

Abstract: The object of the present invention is to provide a multilayer ceramic electronic component having improved highly accelerated lifetime and specific permittivity. A multilayer ceramic electronic component comprising a multilayer body in which an internal electrode layer and a dielectric layer are stacked in alternating manner, wherein the dielectric layer comprises a dielectric ceramic composition having a main component expressed by a general formula ABO3 (A is Ba and the like, and B is Ti and the like) and a rare earth component R, a segregation phase including the rare earth component R exists in the dielectric layer, an area ratio of the segregation phases in a cross section along a stacking direction is 104 ppm to 961 ppm, and 96% or more of a total area of the segregation phases contact with the internal electrode layer.

公开(公告)号：US20190237255A1

公开(公告)日：2019-08-01

申请号：US16250702

申请日：2019-01-17

Applicant: TDK CORPORATION

Inventor： Dan SAKURAI ,  Toshihiko KANEKO ,  Nobuto MORIGASAKI ,  Toshinari TAKAHASHI ,  Yasuhiro ITO

IPC: H01G4/12 ,  C04B35/49 ,  H01G4/008 ,  H01G4/30

CPC classification number: H01G4/1245 ,  C04B35/49 ,  H01G4/008 ,  H01G4/30

Abstract: A dielectric ceramic composition having good properties, particularly good IR property and high temperature accelerated lifetime, even under high electric field intensity. A dielectric ceramic composition having a main component made of a perovskite type compound expressed by a compositional formula of (Ba1-x-ySrxCay)m(Ti1-zZrz)O3 (note that, m, x, y, and z of the above compositional formula all represent molar ratios, and each satisfies 0.9

公开(公告)号：US20140209664A1

公开(公告)日：2014-07-31

申请号：US13750499

申请日：2013-01-25

Applicant: TDK CORPORATION ,  SAE MAGNETICS (H.K.) LTD.

Inventor： Seiichi TAKAYAMA ,  Yasuhiro ITO ,  Nobuyuki MORI ,  Koji SHIMAZAWA ,  Kazuaki TAKANUKI ,  Youichi ANDO

IPC: G11B5/127

CPC classification number: G11B5/105 ,  G11B5/3166 ,  G11B5/455 ,  G11B5/6088 ,  G11B2005/0021 ,  Y10T29/49036

Abstract: A method of manufacturing an electronic device includes a positioning step of positioning a first member supporting a laser diode with respect to a second member having a waveguide, a bonding step of bonding the first member and the second member together, and a checking step of checking the accuracy of positioning of the first member with respect to the second member. In the positioning step, the laser diode is energized to allow laser light to be emitted, and the laser light is allowed to be incident on the incidence end of the waveguide. In the bonding step, a bonding material is melted by irradiating the first member with heating light while the laser diode is not energized. In the checking step, the laser diode is energized again.

Abstract translation: 一种电子装置的制造方法，其特征在于，包括：定位步骤，使相对于具有波导的第二构件支撑激光二极管的第一构件，将所述第一构件和所述第二构件接合在一起的接合工序;以及检查步骤 第一构件相对于第二构件的定位精度。 在定位步骤中，对激光二极管通电以允许发射激光，并允许激光入射到波导的入射端。 在接合步骤中，当激光二极管未通电时，通过用加热光照射第一构件来熔化接合材料。 在检查步骤中，激光二极管再次通电。