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公开(公告)号：US11823842B2
公开(公告)日：2023-11-21
申请号：US17683897
申请日：2022-03-01
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi , Yuichiro Sueda , Ryota Namiki
CPC classification number: H01G4/2325 , H01G4/1227 , H01G4/30
Abstract: A ceramic electronic device includes an element body and an external electrode. The element body includes a ceramic layer and an internal electrode layer. The external electrode is formed on an end surface of the element body and electrically connected to a part of the internal electrode layer. The ceramic layer includes a perovskite compound represented by ABO3 as a main component. The external electrode includes a conductor and a glass frit diffused in the conductor. The glass frit includes B, Si, Ba, and Zn. A boundary layer is present at an end of the ceramic layer in contact with the external electrode on the end surface of the element body and comprises an oxide including Ba, Zn, and Si.
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公开(公告)号：US11367571B2
公开(公告)日：2022-06-21
申请号：US17115210
申请日：2020-12-08
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi
IPC: H01G4/12 , C04B35/465 , C04B35/49 , C04B35/48
Abstract: A dielectric composition includes a main phase and a Ca—Zr—Si—O segregation phase. The main phase includes a main component expressed by ABO3. “A” includes at least one selected from calcium and strontium. “B” includes at least one selected from zirconium, titanium, hafnium, and manganese. The Ca—Zr—Si—O segregation phase includes at least calcium, zirconium, and silicon. The Ca—Zr—Si—O segregation phase includes 0.12-0.50 parts by mol of zirconium, provided that a total of calcium, strontium, silicon, and zirconium included in the Ca—Zr—Si—O segregation phase is 1 part by mol.
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公开(公告)号：US11114244B2
公开(公告)日：2021-09-07
申请号：US16783209
申请日：2020-02-06
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi
IPC: H01G4/12 , C04B35/495 , C04B35/626 , C04B35/634 , C04B35/64 , H01G4/30 , H01G4/232 , H01G4/248
Abstract: Provided is a dielectric composition which includes, as a main component, a complex oxide represented by a general formula AaBbC4O15+α and having a tungsten bronze structure, wherein “A” includes at least Ba, “B” includes at least Zr, “C” includes at least Nb, “a” is 3.05 or higher, and “b” is 1.01 or higher. In the dielectric composition, when the total number of atoms occupying M2 sites in the tungsten bronze structure is set to 1, the proportion of “B” is 0.250 or higher. In addition, in the dielectric composition, an X-ray diffraction peak of a (410) plane of the tungsten bronze structure is splitted into two, and an integrated intensity ratio of an integrated intensity of a high-angle side peak of the X-ray diffraction peak with respect to an integrated intensity of a low-angle side peak of the X-ray diffraction peak is 0.125 or higher.
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公开(公告)号：US10964477B2
公开(公告)日：2021-03-30
申请号：US16558542
申请日：2019-09-03
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi
IPC: H01G4/12 , C04B35/495 , C04B35/626 , C04B35/634 , C04B35/64 , H01B3/12 , H01G4/30
Abstract: A dielectric composition comprising a complex oxide represented by a general formula of AaBbC4O15+α and an oxide including aluminum, in which “A” at least includes Ba, “B” at least includes Zr, and “C” at least includes Nb, “a” is 2.50 or more and 3.50 or less, and “b” is 0.50 or more, and 1.50 or less.
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公开(公告)号：US20190304681A1
公开(公告)日：2019-10-03
申请号：US16270975
申请日：2019-02-08
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi
Abstract: A multilayer ceramic electronic component such as a multilayer ceramic capacitor capable of maintaining insulation properties even when a current is passed through the capacitor after an occurrence of a short-circuit due to, for example, a high voltage or a high current is provided. A multilayer ceramic electronic component including an element body 4 formed by laminating dielectric layers 10 and internal electrode layers 12 alternately. The internal electrode layers contains copper and/or silver as a main component. The dielectric voidage is lower than the internal electrode voidage.
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Patent Agency Ranking
公开(公告)号：US08921248B2
公开(公告)日：2014-12-30
申请号：US13773380
申请日：2013-02-21
Applicant: TDK Corporation
Inventor： Toshihiro Iguchi , Akitoshi Yoshii , Tatsuya Kojima , Satoshi Takagi
CPC classification number: C04B35/50 , C01G33/006 , C01G35/006 , C01P2006/40 , C04B35/495 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3241 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/652 , C04B2235/656 , C04B2235/6562 , C04B2235/6582 , C04B2235/6588 , C04B2235/663 , C04B2235/76 , C04B2235/9615 , H01G4/1209 , H01G4/1254 , H01G4/30
Abstract: Dielectric ceramic composition comprising a compound shown by a general formula {A1-x(RE)2x/3}y-B2O5+y and has a tungsten bronze-type structure. In the formula, “A” is at least one selected from a group comprising Ba, Ca, Sr and Mg, “B” is at least one selected from Nb and Ta, “RE” is at least one selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and said “x” and “y” satisfies 0
Abstract translation: 电介质陶瓷组合物，其包含通式{A1-x（RE）2x / 3} y-B2O5 + y所示的化合物，并具有钨青铜型结构。 在该式中，“A”为选自Ba，Ca，Sr和Mg的组中的至少一种，“B”为选自Nb和Ta中的至少一种，“RE”为选自Sc，Y， La，Ce，Pr，Nd，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu，“x”和“y”分别满足0
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公开(公告)号：US08853115B2
公开(公告)日：2014-10-07
申请号：US13773370
申请日：2013-02-21
Applicant: TDK Corporation
Inventor： Toshihiro Iguchi , Akitoshi Yoshii , Tatsuya Kojima , Satoshi Takagi
IPC: C04B35/495 , C04B35/50 , H01G4/10 , C04B35/626 , H01G4/12 , H01G4/30 , C01G33/00
CPC classification number: C04B35/50 , C01G33/006 , C04B35/495 , C04B35/6263 , C04B2235/3203 , C04B2235/3206 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3217 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3239 , C04B2235/3241 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3272 , C04B2235/3409 , C04B2235/3418 , C04B2235/656 , C04B2235/6562 , C04B2235/76 , C04B2235/78 , C04B2235/9615 , H01G4/1209 , H01G4/1254 , H01G4/30
Abstract: A dielectric ceramic composition comprising a compound shown by a general formula {A1−x(RE)2x/3}y-D2O5+y having tungsten bronze-type structure and an oxide of “M”. “A” is at least one selected from Ba, Ca, Sr and Mg, “D” is at least one selected from Nb and Ta, “RE” is at least one selected from Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, “x” and “y” satisfies 0 0, respectively and said “M” is at least one selected from Al, Si, B and Li. It is preferable to further comprise Mg oxide.
Abstract translation: 一种电介质陶瓷组合物，其包含具有钨青铜型结构和“M”氧化物的通式{A1-x（RE）2x / 3} y-D2O5 + y所示的化合物。 “A”为选自Ba，Ca，Sr和Mg中的至少一种，“D”为选自Nb和Ta中的至少一种，“RE”为选自Sc，Y，La，Ce，Pr，Nd ，Sm，Eu，Gd，Tb，Dy，Ho，Er，Tm，Yb和Lu，“x”和“y”分别满足0
0，所述“M” 来自Al，Si，B和Li。 优选还包含Mg氧化物。 -
公开(公告)号：US11978592B2
公开(公告)日：2024-05-07
申请号：US17748697
申请日：2022-05-19
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi , Yuichiro Sueda , Ryota Namiki
IPC: H01G4/008 , C04B35/468 , H01G4/012 , H01G4/12 , H01G4/30
CPC classification number: H01G4/1227 , C04B35/4682 , H01G4/008 , H01G4/012 , H01G4/30
Abstract: A dielectric composition includes dielectric particles and first segregations. The dielectric particles each include a perovskite compound represented by ABO3 as a main component. The first segregations each include at least Ba, P, and O. A molar ratio (Ba/Ti) of Ba to Ti in the first segregations is 1.20 or more.
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公开(公告)号：US11823840B2
公开(公告)日：2023-11-21
申请号：US17683518
申请日：2022-03-01
Applicant: TDK CORPORATION
Inventor： Toshihiro Iguchi , Yuichiro Sueda , Ryota Namiki
CPC classification number: H01G4/2325 , H01G4/1227 , H01G4/30
Abstract: A ceramic electronic device includes an element body and an external electrode. The element body is formed by laminating a ceramic layer and an internal electrode layer. The external electrode is electrically connected to at least one end of the internal electrode layer. At least a part of a joint boundary between the electrode layer and the ceramic layer includes an interface protrusion on the external electrode side. The interface protrusion is made of an oxide.
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公开(公告)号：US11798743B2
公开(公告)日：2023-10-24
申请号：US17229393
申请日：2021-04-13
Applicant: TDK CORPORATION
Inventor： Shinya Saito , Kenya Tamaki , Norihisa Ando , Shinya Ito , Akihiro Masuda , Kosuke Yazawa , Yoshiki Satou , Katsumi Kobayashi , Toshihiro Iguchi
Abstract: An electronic device includes chip components, a case, conductive terminals, and a fuse. The chip components each include a terminal electrode. The case includes accommodation recesses for accommodating the chip components. The conductive terminals are fixed to the case and respectively connected to the terminal electrodes of the chip components. The fuse electrically connects the chip components.
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