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1. 发明授权

US11142482B2 Ceramic composition and electronic component using the ceramic composition 有权
公开(公告)号：US11142482B2
公开(公告)日：2021-10-12
申请号：US16512822
申请日：2019-07-16
申请人： TAIYO YUDEN CO., LTD.
发明人： Keiko Yajima , Takashi Nakajima
IPC分类号： C04B35/47 , C04B35/453 , C04B35/10 , C04B35/45
摘要： A ceramic composition in one embodiment contains, relative to 100 parts by mass of diopside crystal powder, 0.3 to 1.5 parts by mass of a Li component in terms of an oxide thereof and 0.1 to 1 part by mass of a B component in terms of an oxide thereof. In this embodiment, the content of the Li component in terms of an oxide thereof is larger than the content of the B component in terms of an oxide thereof. In this embodiment, a total content of the Li component and the B component is 2.25 parts by mass or less in terms of oxides thereof.

2. 发明授权

US10650968B2 Multilayer ceramic capacitor 有权
公开(公告)号：US10650968B2
公开(公告)日：2020-05-12
申请号：US16225402
申请日：2018-12-19
申请人： Murata Manufacturing Co., Ltd.
发明人： Takeshi Koga , Teppei Akiyoshi , Masayuki Ishihara , Katsuhiko Hara
IPC分类号： H01G4/30 , H01G4/12 , C04B35/468 , H01B3/12 , C04B35/49 , C04B35/47 , C04B35/486
摘要： A multilayer ceramic capacitor includes dielectric layers and internal electrode layers provided on the dielectric layers. The dielectric layers each include a perovskite compound that includes Ca and Zr, and optionally Sr and Ti. Mn is disposed at an interface between one of the dielectric layers and one of the internal electrode layers, and a Mn/Zr molar ratio at the interface is not less than about 0.117.

3. 发明授权

US10580576B2 Dielectric powder and multilayer ceramic electronic component using the same 有权
公开(公告)号：US10580576B2
公开(公告)日：2020-03-03
申请号：US15953942
申请日：2018-04-16
申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD.
发明人： Jin Woo Kim , Chang Hak Choi , Kang Heon Hur , Seok Hyun Yoon , Seung Ho Lee
IPC分类号： H01B1/08 , H01G4/12 , H01G4/30 , C04B35/628 , C04B35/462 , C04B35/468 , C04B35/48 , C04B35/465 , C04B35/47 , C01G23/00 , H01G4/248
摘要： A multilayer ceramic electronic component includes: a body part including dielectric layers and internal electrodes disposed to face each other with respective dielectric layers interposed therebetween; and external electrodes disposed on an outer surface of the body part and electrically connected to the internal electrodes. The dielectric layer includes grains including: a semiconductive or conductive grain core region containing a base material represented by ABO3, where A is at least one of Ba, Sr, and Ca, and B is at least one of Ti, Zr, and Hf, and a doping material including a rare earth element; and an insulating grain shell region enclosing the grain core region.

4. 发明授权

US10577285B2 Non-ferroelectric high dielectric and preparation method thereof 有权
公开(公告)号：US10577285B2
公开(公告)日：2020-03-03
申请号：US15972660
申请日：2018-05-07
申请人： Korea Advanced Institute of Science and Technology
发明人： Sung Yoon Chung , Hye In Yoon , Gi Young Jo
IPC分类号： C04B35/47 , B28B11/24 , B28B3/00
摘要： Provided is a method for preparing a grain boundary insulation-type dielectric. The method includes the steps of obtaining a titanic acid compound and a ferroelectric having a value less than a melting point of the titanic acid compound; obtaining a mixture by adding the ferroelectric material to the titanic acid compound; and sintering the mixture at a temperature equal to or more than a melting point of the ferroelectric material.

5. 发明申请

US20200039887A1 DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC ELECTRONIC COMPONENT 审中-公开
公开(公告)号：US20200039887A1
公开(公告)日：2020-02-06
申请号：US16511286
申请日：2019-07-15
申请人： TDK CORPORATION
发明人： Takuma ARIIZUMI , Toshihiko KANEKO , Nobuto MORIGASAKI , Yasuhiro ITO
IPC分类号： C04B35/47 , C04B35/468 , C04B35/49 , H01G4/12 , H01G4/30 , H01G4/005 , C04B35/628
摘要： The object of the present invention is to provide a dielectric ceramic composition having even improved insulation specific resistance and highly accelerated lifetime. A dielectric ceramic composition comprising a dielectric particle having a core-shell structure including 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 element component R, in which a shell part of the core-shell structure has an average rare earth element concentration C of 0.3 atom % or more, and a rare earth element concentration gradient S is −0.010 atom %/nm≤S≤0.009 atom %/nm or a rare earth element concentration variation satisfies σ/C≤0.15 (a is a standard deviation of a rare earth element concentration and C is an average rare earth element concentration).

6. 发明授权

US10475577B2 Dielectric composition, dielectric element, electronic component and multi-layer electronic component 有权
公开(公告)号：US10475577B2
公开(公告)日：2019-11-12
申请号：US15745688
申请日：2016-06-16
申请人： EPCOS AG
发明人： Masakazu Hirose , Goushi Tauchi , Tomoya Imura , Tomohiro Terada
IPC分类号： C04B35/475 , H01G4/12 , C04B35/462 , C04B35/47 , H01G4/30 , C04B35/626 , C04B35/628 , C04B35/634 , C04B35/64 , H01G4/012
摘要： A dielectric composition, a dielectric element, an electronic component and a multi-layer electronic component are disclosed. In an embodiment the dielectric composition includes a perovskite crystal structure containing at least Bi, Na, Sr and Ti, wherein the dielectric composition includes at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein the dielectric composition includes specific particles having a core-shell structure that has at least one core portion including SrTiO3 and wherein α is set to 0.20≤α≤0.70, where α is the ratio of the number of specific particles with respect to the total number of particles contained in the dielectric composition.

7. 发明授权

US10450234B2 Dielectric composition, dielectric element, electronic component and laminated electronic component 有权
公开(公告)号：US10450234B2
公开(公告)日：2019-10-22
申请号：US15745674
申请日：2016-06-16
申请人： TDK Electronics AG
发明人： Masakazu Hirose , Goushi Tauchi , Tomoya Imura , Tomohiro Terada
IPC分类号： C04B35/475 , H01G4/12 , C04B35/47 , C04B35/462
摘要： A dielectric composition, a dielectric element, an electronic component and a laminated electronic component are disclosed. In an embodiment a dielectric composition includes particles comprising a perovskite crystal structure including at least Bi, Na, Sr and Ti and at least one element selected from the group consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, wherein a content of the element is between 0.5 molar pails and 11.1 molar parts, defining a Ti content of the dielectric composition as 100 molar parts, wherein 0.17≤α≤2.83, where α is a molar ratio of Bi with respect to Sr in the dielectric composition, wherein at least some of the particles include a low-Bi phase, and wherein a total surface area of the low-Bi phase within the particles is between 0.1% and 15% of the total surface area of the particles.

8. 发明申请

US20190300436A1 DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT 审中-公开
公开(公告)号：US20190300436A1
公开(公告)日：2019-10-03
申请号：US16357860
申请日：2019-03-19
申请人： TDK CORPORATION
发明人： Daisuke OHTSU , Taku MASAI , Liu HAILONG , Liang LIPING
IPC分类号： C04B35/468 , C04B35/47 , C04B35/475
摘要： The object of the present invention is to provide the dielectric composition having good specific permittivity, high DC breakdown voltage and AC breakdown voltage, small dielectric loss and heat generating property, and good temperature property even though lead is not substantially used. A dielectric composition of the first aspect includes a, Ca, Bi, Ti, and Sr, wherein the dielectric composition includes two phases having different Sr characteristic X ray intensities when a characteristic X ray intensity derived from Sr is measured by EPMA, and when Sr1 represents the characteristic X ray intensity derived from Sr of a first phase measured by EPMA and Sr2 represents the characteristic X ray intensity derived from Sr of a second phase measured by EPMA, a ratio (Sr2/Sr1) of Sr2 with respect to Sr1 satisfies 2 or larger. A dielectric composition of the second aspect includes Ba, Ca, Bi, Ti, and Sr, wherein the dielectric composition includes three phases having different Sr characteristic X ray intensities when a characteristic X ray intensity derived from Sr is measured by EPMA, and when Sr1 represents the characteristic X ray intensity derived from Sr of a first phase measured by EPMA, Sr2 represents the characteristic X ray intensity derived from Sr of a second phase measured by EPMA, and Sr3 represents the characteristic X ray intensity derived from Sr of a third phase measured by EPMA, an intensity ratio (Sr1/Sr3) of Sr1 with respect to Sr3 is 0.6 or less and an intensity ratio (Sr2/Sr3) of Sr2 with respect to Sr3 is 1.4 or more.

9. 发明申请

US20190241476A1 DIELECTRIC CERAMIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT 审中-公开
公开(公告)号：US20190241476A1
公开(公告)日：2019-08-08
申请号：US16342515
申请日：2017-10-11
申请人： SHOEI CHEMICAL INC.
发明人： Takeshi Nomura , Atsushi Nemoto , Yukari Sasaki , Kazuhiko Takemoto , Naomi Kinoshita , Yumi Takahashi
IPC分类号： C04B35/47 , C04B35/495 , C04B35/468 , H01G4/12
CPC分类号： C04B35/47 , C04B35/468 , C04B35/495 , C04B35/499 , C04B2235/3206 , C04B2235/3225 , C04B2235/3239 , C04B2235/3244 , C04B2235/3251 , C04B2235/3262 , C04B2235/3293 , C04B2235/3418 , C04B2235/6562 , C04B2235/76 , C04B2235/96 , H01B3/12 , H01G4/12 , H01G4/1227 , H01G4/30
摘要： According to the present invention, a dielectric ceramic composition, which can be fired in a reducing atmosphere, has a high dielectric constant, has an electrostatic capacity exhibiting little change, when used as a dielectric layer of a ceramic electronic component such as a laminated ceramic capacitor even under a condition of 150 to 200° C., and has small dielectric losses at 25° C. and 200° C., can be provided.

10. 发明授权

US10190045B2 Nano-composite structure and processes making of 有权
公开(公告)号：US10190045B2
公开(公告)日：2019-01-29
申请号：US14988659
申请日：2016-01-05
申请人： Xiaomei Guo , Kewen Kevin Li , Yingyin Kevin Zou , Hua Jiang
发明人： Xiaomei Guo , Kewen Kevin Li , Yingyin Kevin Zou , Hua Jiang
IPC分类号： C09K11/77 , C03C1/00 , C03C17/25 , C04B35/468 , C04B35/47 , C04B35/472 , C04B35/491 , C04B35/499 , C04B35/622 , C04B35/80
摘要： A nano-composite structure comprises of an amorphous matrix with embedded nano-crystallites. The nano-crystallites are precipitated from the amorphous matrix via heat treatment of a solution mixture of metal salts or metalorganic compounds to an appropriate temperature range and with a suitable duration, or heating of a mixture of non-crystalline compounds. The nano-crystallites are self-assembled in the amorphous matrix without forming agglomerates or distinguished grain boundaries. The nano-composite structure can be used for transparent display, transparent optical ceramics, protection armor, nuclear protection, pulsed power, high voltage electronics, high energy storage system and high power microwave systems.

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