公开(公告)号：US20190237256A1

公开(公告)日：2019-08-01

申请号：US16253785

申请日：2019-01-22

Applicant: TDK CORPORATION

Inventor： Kosuke TAKANO ,  Momoyo SASAKI ,  Toshihiko KANEKO

IPC: H01G4/12 ,  H01G4/30 ,  H01B3/12

CPC classification number: H01G4/1245 ,  C01G23/006 ,  C01P2002/34 ,  C01P2002/52 ,  C01P2002/54 ,  C01P2002/70 ,  C01P2002/72 ,  C01P2004/64 ,  C04B35/462 ,  C04B35/4682 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3205 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3248 ,  C04B2235/3262 ,  C04B2235/327 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/662 ,  C04B2235/76 ,  C04B2235/761 ,  C04B2235/79 ,  H01B3/12 ,  H01G4/0085 ,  H01G4/1218 ,  H01G4/1227 ,  H01G4/232 ,  H01G4/30

Abstract: A dielectric ceramic composition includes a main component of a perovskite type compound represented by a general formula of ABO3, in which A is an element in an A-site, B is an element in a B-site, and O is an oxygen element. A includes Ba. A further includes at least one of Ca and Sr. B includes Ti. A sintered-body lattice volume obtained by X-ray diffraction method is 64.33 Å3 or below.

公开(公告)号：US20160293333A1

公开(公告)日：2016-10-06

申请号：US15087275

申请日：2016-03-31

Applicant: TDK Corporation

Inventor： Toshihiko KANEKO ,  Shogo MUROSAWA

IPC: H01G4/30 ,  H01G4/248 ,  H01G4/012 ,  H01G4/12

CPC classification number: H01G4/30 ,  H01G4/12 ,  H01G4/232

Abstract: Provided is a multilayer ceramic electronic device which is capable of preventing decrease of the specific permittivity and of showing less drop of capacitance, even when the dielectric grains constituting the dielectric layers become smaller for thinning of the dielectric layers, wherein Dg/Di≧1 is satisfied, in case that “Di” is an average grain size of the first dielectric grains constituting the dielectric layer in the capacitance region and “Dg” is an average grain size of the second dielectric grains in an exterior area.

Abstract translation: 提供一种多层陶瓷电子器件，即使构成电介质层的电介质粒子变薄，电介质层变薄也能够防止比容阻率的降低和电容量的降低，其中Dg /Di≥1为 在“Di”是构成电容区域中的电介质层的第一电介质粒子的平均粒径的情况下，“Dg”是外部区域中的第二电介质粒子的平均粒径的情况。

公开(公告)号：US20160264474A1

公开(公告)日：2016-09-15

申请号：US15064436

申请日：2016-03-08

Applicant: TDK CORPORATION

Inventor： Toshihiko KANEKO ,  Tatsuya FUJINO ,  Takeru YOSHIDA ,  Haruki EBINA ,  Nobuto MORIGASAKI

IPC: C04B35/468 ,  H01G4/12

CPC classification number: C04B35/4682 ,  C04B35/465 ,  C04B35/47 ,  C04B35/488 ,  C04B35/49 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3236 ,  C04B2235/3239 ,  C04B2235/3248 ,  C04B2235/3249 ,  C04B2235/3256 ,  C04B2235/3258 ,  C04B2235/3262 ,  C04B2235/3418 ,  C04B2235/5454 ,  C04B2235/6025 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/6584 ,  C04B2235/6588 ,  C04B2235/768 ,  C04B2235/79 ,  C04B2237/68 ,  H01G4/1209 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/1245 ,  H01G4/30

Abstract: A dielectric ceramic composition and a ceramic electric device having a dielectric layer composed of the dielectric ceramic composition including a main component having a perovskite crystal structure expressed by general formula ABO3, an oxide of Eu, an oxide of Ra (Sc, Er, Tm, Yb and Lu), an oxide of Rb (Y, Dy, Ho, Tb and Gd) and an oxide of Si, in which 0.075≦α≦0.5, 0.5≦β≦3, 1.0≦γ≦4, 1.5≦δ≦5, and 0.030≦α/δ≦0.250 where a content of an oxide of Eu is α mole, a content of the oxide of Ra is β mole, a content of the oxide of Rb is γ mole, and a content of the second sub-component is δ mole with respect to 100 moles of the main component.

Abstract translation: 一种电介质陶瓷组合物和陶瓷电气装置，具有由介电陶瓷组合物构成的电介质层，该电介质陶瓷组合物包括具有由通式ABO 3表示的钙钛矿晶体结构的主要成分，Eu的氧化物，Ra（Sc，Er，Tm， Yb和Lu），Rb（Y，Dy，Ho，Tb和Gd）的氧化物和Si的氧化物，其中0.075≤α≤0.5,0.5≤β≤3,1.0≤γ≤4,1.5≤δ≤ 5和0.030≤α/δ≤0.250其中Eu的氧化物的含量为α摩尔，Ra的氧化物的含量为β摩尔，Rb的氧化物的含量为γ摩尔，第二 亚成分相对于100摩尔的主成分为δ摩尔。

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：US20190237257A1

公开(公告)日：2019-08-01

申请号：US16253974

申请日：2019-01-22

Applicant: TDK CORPORATION

Inventor： Kosuke TAKANO ,  Momoyo SASAKI ,  Toshihiko KANEKO

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

CPC classification number: H01G4/1245 ,  C01G23/006 ,  C01G25/006 ,  C01P2002/72 ,  C04B35/462 ,  C04B35/4682 ,  C04B35/49 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3205 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3229 ,  C04B2235/3239 ,  C04B2235/3241 ,  C04B2235/3244 ,  C04B2235/3248 ,  C04B2235/3262 ,  C04B2235/327 ,  C04B2235/3275 ,  C04B2235/3279 ,  C04B2235/5445 ,  C04B2235/5454 ,  C04B2235/6562 ,  C04B2235/6565 ,  C04B2235/6567 ,  C04B2235/658 ,  C04B2235/662 ,  C04B2235/76 ,  C04B2235/761 ,  C04B2235/768 ,  C04B2235/79 ,  H01G4/008 ,  H01G4/1218 ,  H01G4/1227 ,  H01G4/1236 ,  H01G4/30

Abstract: A dielectric ceramic composition includes a main component of a perovskite type compound represented by a general formula of ABO3, in which A is an element in an A-site, B is an element in a B-site, and O is an oxygen element. A includes Ba. B includes Ti and Zr. A sintered-body lattice volume obtained by X-ray diffraction method is 64.50 Å3 or above.

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：US20150274600A1

公开(公告)日：2015-10-01

申请号：US14661881

申请日：2015-03-18

Applicant: TDK CORPORATION

Inventor： Raitarou MASAOKA ,  Toshihiko KANEKO ,  Yuki YAMASHITA ,  Hiroki UCHIYAMA ,  Saori TAKEDA ,  Yuji SEZAI ,  Shirou OOTSUKI

IPC: C04B35/49 ,  C04B35/47 ,  C04B35/48

CPC classification number: C04B35/49 ,  C04B35/47 ,  C04B35/48 ,  C04B35/486 ,  C04B35/638 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/6562 ,  C04B2235/79 ,  C04B2235/80 ,  H01B3/12

Abstract: A dielectric composition contains major components that are an A-group containing major components that are at least two selected from the group consisting of Ba, Ca, and Sr and a B-group which contains a major component that is selected from Zr and Ti and which contains at least Zr. The dielectric composition contains an amorphous substance containing the A-group and the B-group and a crystalline substance containing the A-group and the B-group. In the dielectric composition, the inequality 0.5≦α≦1.5 holds, where α is the molar ratio of the A-group to the B-group.

Abstract translation: 电介质组合物包含主要成分，其为含有主要成分的主要成分，所述主成分为选自Ba，Ca和Sr中的至少两种，以及含有选自Zr和Ti的主要成分的B基，以及 其至少包含Zr。 电介质组合物含有含有A基团和B基团的无定形物质和含有A基团和B基团的结晶物质。 在电介质组成中，不等式为0.5＆nlE;α＆nlE; 1.5，其中α是A组与B基团的摩尔比。

公开(公告)号：US20150124373A1

公开(公告)日：2015-05-07

申请号：US14529623

申请日：2014-10-31

Applicant: TDK CORPORATION

Inventor： Saori TAKEDA ,  Toshihiko KANEKO ,  Yuki YAMASHITA ,  Yuji SEZAI

IPC: C04B35/453 ,  H01G4/12

CPC classification number: C04B35/453 ,  C04B35/16 ,  C04B2235/3298 ,  C04B2235/3427 ,  C04B2235/604 ,  C04B2235/6567 ,  C04B2235/80 ,  H01G4/085 ,  H01G4/1209 ,  H01G4/1272 ,  H01G4/33 ,  H01L28/55

Abstract: A dielectric composition containing a crystalline phase represented by a general formula of Bi12SiO20 and a crystalline phase represented by a general formula of Bi2SiO5 as the main components. The dielectric composition contains preferably 5 mass % to 99 mass % of the Bi2SiO5 crystalline phase, and more preferably 30 mass % to 99 mass %.

Abstract translation: 含有由通式Bi 12 SiO 20表示的结晶相和由通式Bi 2 SiO 5表示的结晶相作为主要成分的电介质组合物。 电介质组合物优选含有5质量％〜99质量％的Bi 2 SiO 5结晶相，更优选含有30质量％〜99质量％。

公开(公告)号：US20220254568A1

公开(公告)日：2022-08-11

申请号：US17588582

申请日：2022-01-31

Applicant: TDK CORPORATION

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

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

Abstract: A dielectric composition includes main-phase particles each including a main component having a perovskite crystal structure represented by a general formula of ABO3. At least a part of the main-phase particles has a core-shell structure. The dielectric composition includes RA, RB, M, and Si. Each of A, B, RA, RB, and M is one or more elements selected from a specific element group. SRA/SRB>CRA/CRB is satisfied, where CRA is an RA content (mol %) to the main component in terms of RA2O3, and CRB is an RB content (mol %) to the main component in terms of RB2O3, in the dielectric composition, and SRA is an average RA content (mol %), and SRB is an average RB content (mol %), in a shell part of the core-shell structure.

公开(公告)号：US20220246354A1

公开(公告)日：2022-08-04

申请号：US17569617

申请日：2022-01-06

Applicant: TDK CORPORATION

Inventor： Kosuke TAKANO ,  Toshihiko KANEKO ,  Nobuto MORIGASAKI ,  Yasushi KAWASHIMA ,  Momoyo SASAKI

IPC: H01G4/232 ,  H01G4/012 ,  H01G4/30 ,  H01G4/12

Abstract: An electronic component includes an element body having a functional layer and an internal electrode layer, and an external electrode formed on a surface of the element body and connected to the internal electrode layer electrically. The chlorine concentration of the element body of the electronic component is 10 ppm or less.