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1. 发明授权

US10121591B2 Laminated ceramic capacitor and method for manufacturing laminated ceramic capacitor 有权
公开(公告)号：US10121591B2
公开(公告)日：2018-11-06
申请号：US15643826
申请日：2017-07-07
申请人： Murata Manufacturing Co., Ltd.
发明人： Shinichi Yamaguchi , Shoichiro Suzuki , Akitaka Doi
IPC分类号： H01G4/008 , H01G4/30 , H01G4/12 , H01G4/012 , H01G13/00
摘要： A laminated ceramic capacitor that includes a ceramic laminated body having a stacked plurality of ceramic dielectric layers and a plurality of internal electrodes opposed to each other with the ceramic dielectric layers interposed therebetween, and external electrodes on the outer surface of the ceramic laminated body and electrically connected to the internal electrodes. The internal electrodes contain Ni and Sn, a proportion of the Sn/(Ni+Sn) ratio is 0.001 or more in molar ratio is 75% or more in a region of the internal electrode at a depth of 20 nm from a surface opposed to the ceramic dielectric layer, and the proportion of the Sn/(Ni+Sn) ratio is 0.001 or more in molar ratio is less than 40% in a central region in a thickness direction of the internal electrode.

2. 发明授权

US09818536B2 Multilayer ceramic capacitor and method of manufacturing multilayer ceramic capacitor 有权
公开(公告)号：US09818536B2
公开(公告)日：2017-11-14
申请号：US15171059
申请日：2016-06-02
申请人： Murata Manufacturing Co., Ltd.
发明人： Shoichiro Suzuki , Shinichi Yamaguchi , Akitaka Doi
IPC分类号： H01G4/005 , H01G4/008 , H01G4/30 , H01G4/232 , H01G4/12
CPC分类号： H01G4/008 , H01G4/0085 , H01G4/1227 , H01G4/232 , H01G4/30
摘要： A multilayer ceramic capacitor that includes an internal electrode containing at least one kind of metal A selected from the group consisting of In, Ga, Zn, Bi, and Pb and dissolved in Ni to form a solid solution. The internal electrode has a ratio of A of 1.4 atomic percent or more to a total amount of A and Ni in a near-interface region located to a depth of 2 nm from a surface of the internal electrode facing a corresponding ceramic dielectric layer. A relation between a value X of atomic percent representing the ratio of A in the near-interface region and a value Y of atomic percent representing the ratio of A in a central region in a thickness direction of the internal electrode is X−Y≧1.0. Such a multilayer capacitor is formed by annealing a ceramic stack under a predetermined condition to increase the ratio of metal A in the near-interface region of the internal electrode.

3. 发明授权

US09558886B2 Electronic component 有权
标题翻译：电子元器件
公开(公告)号：US09558886B2
公开(公告)日：2017-01-31
申请号：US14033958
申请日：2013-09-23
申请人： Murata Manufacturing Co., Ltd.
发明人： Koichi Banno , Shoichiro Suzuki , Taisuke Kanzaki , Akihiro Shiota
IPC分类号： H01G4/06 , H01G4/30 , H01G4/232 , H01G4/12 , H01G4/002 , H01G4/012 , H01G4/018 , H01G4/015
CPC分类号： H01G4/002 , H01G4/012 , H01G4/015 , H01G4/018 , H01G4/12 , H01G4/30
摘要： A laminate body includes a plurality of ceramic layers and capacitor conductors embedded in the laminate body so as to be opposed to each other via one of the ceramic layers. The capacitor conductors are made of an Al-based material, and the capacitor conductors include narrow portions, respectively, which function as fuse elements. The narrow portions have an average width smaller than an average width of portions of the capacitor conductors other than the narrow portions. As a result, the electronic component has an improved capability to protect its function as a capacitor when a short circuit occurs between capacitor conductors.
摘要翻译：层压体包括多个陶瓷层和电容器导体，该多个陶瓷层和电容器导体嵌入在层压体中，以便经由一个陶瓷层彼此相对。电容器导体由Al基材料制成，并且电容器导体分别包括用作熔丝元件的窄部分。窄部的平均宽度比除窄部以外的电容器导体的部分的平均宽度小。结果，当电容器导体之间发生短路时，电子部件具有改进的保护其作为电容器的功能的能力。

4. 发明授权

US09522847B2 Dielectric ceramic, laminated ceramic electronic component, laminated ceramic capacitor, and method for producing laminated ceramic capacitor 有权
标题翻译：介电陶瓷，层叠陶瓷电子元件，层叠陶瓷电容器及层压陶瓷电容器的制造方法
公开(公告)号：US09522847B2
公开(公告)日：2016-12-20
申请号：US14067591
申请日：2013-10-30
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Shoichiro Suzuki , Shinichi Yamaguchi
IPC分类号： H01G4/12 , C04B35/468 , B82Y30/00
CPC分类号： C04B35/4682 , B82Y30/00 , C04B2235/3208 , C04B2235/3244 , C04B2235/3262 , C04B2235/3418 , C04B2235/781 , C04B2235/785 , H01G4/1227 , H01G4/1245 , Y10T29/435
摘要： There are provided a dielectric ceramic having large specific resistance and even capacitance characteristic at 150° C., as well as a laminated ceramic electronic component employing such a dielectric ceramic. A ceramic layer includes crystal grains, the ceramic layer containing a perovskite type compound containing Ba, Ca, Ti, and Zr, containing Si, and optionally containing Mn. When the total content of Ti and Zr is 1 molar part, the content of Mn is 0.015 molar part or less, the content of Si is 0.005 molar part or more and less than 0.03 molar part, the molar ratio x of Ca/(Ba+Ca) satisfies 0.05
摘要翻译：提供了在150℃下具有大电阻和均匀电容特性的介电陶瓷，以及采用这种电介质陶瓷的层压陶瓷电子元件。陶瓷层包括晶粒，该陶瓷层含有含有含有Si的Ba，Ca，Ti和Zr的钙钛矿型化合物，并且任选地含有Mn。当Ti和Zr的总含量为1摩尔份数时，Mn的含量为0.015摩尔份以下，Si的含量为0.005摩尔以上且小于0.03摩尔份，Ca /（Ba + Ca）满足0.05

5. 发明申请

US20140016243A1 MULTILAYER CERAMIC CAPACITOR, DIELECTRIC CERAMIC, MULTILAYER CERAMIC ELECTRONIC COMPONENT, AND METHOD FOR MANUFACTURING MULTILAYER CERAMIC CAPACITOR 有权
标题翻译：多层陶瓷电容器，电介质陶瓷，多层陶瓷电子元件和制造多层陶瓷电容器的方法
公开(公告)号：US20140016243A1
公开(公告)日：2014-01-16
申请号：US14031198
申请日：2013-09-19
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Shoichiro Suzuki , Koichi Banno , Taisuke Kanzaki , Akihiro Shiota
IPC分类号： H01G4/12 , C04B35/64 , C04B35/453
CPC分类号： H01G4/1209 , C04B35/453 , C04B35/475 , C04B35/495 , C04B35/62685 , C04B35/64 , C04B2235/3203 , C04B2235/3208 , C04B2235/3213 , C04B2235/3215 , C04B2235/3251 , C04B2235/3255 , C04B2235/3281 , C04B2235/3284 , C04B2235/3298 , C04B2235/6025 , C04B2235/6562 , C04B2235/6567 , H01G4/1227 , H01G4/232 , H01G4/30
摘要： Provided in a dielectric ceramic having flat capacitance characteristics and a high dielectric constant, and a multilayer ceramic electronic component (such as a multilayer ceramic capacitor) in which the dielectric ceramic is used. A multilayer ceramic capacitor includes a multilayer body having a plurality of dielectric ceramic layers and a plurality of internal electrodes, and external electrodes formed on the multilayer body. The composition of the multilayer body includes any of a bismuth layered compound containing Sr, Bi and Ti, a bismuth layered compound containing Sr, Bi and Nb, and a bismuth layered compound containing Ca, Bi and Ti as a primary ingredient, Bi and at least one of Cu, Ba, Zn and Li, and satisfies the conditions that if the Ti content is 400 molar parts or the Nb content is 200 molar parts, then (Bi content-Ti content) or (Bi content-Nb content) is equal to or greater than 1 molar part and less than 7.5 molar parts and the total content of Cu, Ba, Zn and Li is equal to or greater than 1 molar part and less than 10 molar parts.
摘要翻译：提供在具有平坦电容特性和高介电常数的介电陶瓷中，以及使用电介质陶瓷的多层陶瓷电子部件（例如多层陶瓷电容器）。多层陶瓷电容器包括具有多个介电陶瓷层和多个内部电极的多层体，以及形成在多层体上的外部电极。多层体的组成包括含有Sr，Bi和Ti的铋层状化合物，包含Sr，Bi和Nb的铋层状化合物和含有Ca，Bi和Ti作为主要成分的铋层状化合物，Bi和 Cu，Ba，Zn和Li中的至少一种，并且满足如果Ti含量为400摩尔份或Nb含量为200摩尔份，则（Bi含量-Ti含量）或（Bi含量-Tb含量）为等于或大于1摩尔份且小于7.5摩尔份，Cu，Ba，Zn和Li的总含量等于或大于1摩尔份且小于10摩尔份。

6. 发明授权

US10312023B2 Multilayer ceramic capacitor and method for producing the same 有权
公开(公告)号：US10312023B2
公开(公告)日：2019-06-04
申请号：US15163885
申请日：2016-05-25
申请人： Murata Manufacturing Co., Ltd.
发明人： Akitaka Doi , Shinichi Yamaguchi , Shoichiro Suzuki
IPC分类号： H01G4/30 , H01G4/008 , H01G4/248 , H01G4/232 , H01G11/30
摘要： A multilayer ceramic capacitor having inner electrodes with a Ni-Metal A alloy, the Metal A being selected from Fe, V, Y, and Cu and dissolved in the Ni to form a solid solution. The percentage of the Metal A with respect to the total amount of Metal A and Ni in near-surface regions located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and XA−YA≥1.0, where XA represents the atomic percentage of Metal A in the near-surface regions and YA represents the atomic percentage of Metal A in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body under specific conditions to thereby increase, in the inner electrodes, the percentage of Metal A in the near-surface regions.

7. 发明授权

US10283272B2 Multilayer ceramic capacitor and method for producing the same 有权
公开(公告)号：US10283272B2
公开(公告)日：2019-05-07
申请号：US15163950
申请日：2016-05-25
申请人： Murata Manufacturing Co., Ltd.
发明人： Akitaka Doi , Shinichi Yamaguchi , Shoichiro Suzuki
IPC分类号： H01G4/30 , H01G4/005 , H01G4/008 , H01G4/232
摘要： A multilayer ceramic capacitor having inner electrodes containing at least one metal selected from Cu, Ag, Pd, Pt, Rh, Ir, Ru, and Os in an amount of 0.1 atom % or more that is dissolved in Ni and Sn to form a solid solution. The percentage of Sn with respect to the total amount of Ni and Sn in near-surface regions each located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and X−Y≥1.0, where X represents the atomic percentage of Sn in the near-surface regions and Y represents the atomic percentage of Sn in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body to increase, in the inner electrodes, the percentage of Sn in the near-surface regions.

8. 发明申请

US20180350523A1 ROLL-UP CAPACITOR AND METHOD FOR PRODUCING THE SAME 审中-公开
公开(公告)号：US20180350523A1
公开(公告)日：2018-12-06
申请号：US16047453
申请日：2018-07-27
申请人： Murata Manufacturing Co., Ltd. , Leibniz Institute for Solid State and Materials Research Dresden
发明人： Shoichiro Suzuki , Eric Pankenin , Oliver G. Schmidt
IPC分类号： H01G4/32 , H01G4/005 , H01G4/232
CPC分类号： H01G4/32 , H01G4/015 , H01G4/18 , H01G4/224 , H01G4/232
摘要： A roll-up type capacitor having at least one cylindrical part, a first external electrode on one end of the cylindrical part and a second external electrode on another end of the cylindrical part. The cylindrical part is formed by rolling-up a lower electrode layer and an upper electrode layer with at least a dielectric layer sandwiched therebetween. The first external electrode is electrically connected to the upper electrode layer, and the second external electrode is electrically connected to the lower electrode layer. A thickness of the upper electrode layer at a part where it is connected to the first external electrode is larger than a thickness of the other part of the upper electrode layer, and/or a thickness of the lower electrode layer at a part where it is connected to the second external electrode is larger than a thickness of the other part of the lower electrode layer.

9. 发明申请

US20160358712A1 MULTILAYER CERAMIC CAPACITOR AND METHOD FOR PRODUCING THE SAME 审中-公开
标题翻译：多层陶瓷电容器及其制造方法
公开(公告)号：US20160358712A1
公开(公告)日：2016-12-08
申请号：US15163885
申请日：2016-05-25
申请人： Murata Manufacturing Co., Ltd.
发明人： Akitaka Doi , Shinichi Yamaguchi , Shoichiro Suzuki
IPC分类号： H01G4/30 , H01G4/232 , H01G4/248 , H01G4/008
CPC分类号： H01G4/30 , H01G4/008 , H01G4/232
摘要： A multilayer ceramic capacitor having inner electrodes with a Ni-Metal A alloy, the Metal A being selected from Fe, V, Y, and Cu and dissolved in the Ni to form a solid solution. The percentage of the Metal A with respect to the total amount of Metal A and Ni in near-surface regions located at a depth of 2 nm from a surface of the inner electrode in contact with an adjacent ceramic dielectric layer is 1.4 or more atom %, and XA−YA≧1.0, where XA represents the atomic percentage of Metal A in the near-surface regions and YA represents the atomic percentage of Metal A in mid-thickness regions of the inner electrodes. A method for producing a multilayer ceramic capacitor includes annealing the ceramic multilayer body under specific conditions to thereby increase, in the inner electrodes, the percentage of Metal A in the near-surface regions.
摘要翻译：一种具有镍 - 金属A合金的内电极，金属A选自Fe，V，Y和Cu并溶解在Ni中以形成固溶体的多层陶瓷电容器。相对于与相邻的陶瓷电介质层接触的内部电极的表面2nm处的近表面区域的金属A和Ni的总量，金属A的比例为1.4原子％以上，XA-YA≥1.0，其中XA表示近表面区域中的金属A的原子百分比，YA表示内部电极的中间厚度区域中的金属A的原子百分比。制造多层陶瓷电容器的方法包括在特定条件下退火陶瓷多层体，从而在内电极中增加近表面区域中金属A的百分比。

10. 发明申请

US20160276102A1 MULTILAYER CERAMIC CAPACITOR AND METHOD OF MANUFACTURING MULTILAYER CERAMIC CAPACITOR 有权
标题翻译：多层陶瓷电容器及制造多层陶瓷电容器的方法
公开(公告)号：US20160276102A1
公开(公告)日：2016-09-22
申请号：US15171059
申请日：2016-06-02
申请人： Murata Manufacturing Co., Ltd.
发明人： Shoichiro Suzuki , Shinichi Yamaguchi , Akitaka Doi
IPC分类号： H01G4/008 , H01G4/30 , H01G4/232 , H01G4/12
CPC分类号： H01G4/008 , H01G4/0085 , H01G4/1227 , H01G4/232 , H01G4/30
摘要： A multilayer ceramic capacitor that includes an internal electrode containing at least one kind of metal A selected from the group consisting of In, Ga, Zn, Bi, and Pb and dissolved in Ni to form a solid solution. The internal electrode has a ratio of A of 1.4 atomic percent or more to a total amount of A and Ni in a near-interface region located to a depth of 2 nm from a surface of the internal electrode facing a corresponding ceramic dielectric layer. A relation between a value X of atomic percent representing the ratio of A in the near-interface region and a value Y of atomic percent representing the ratio of A in a central region in a thickness direction of the internal electrode is X−Y≧1.0. Such a multilayer capacitor is formed by annealing a ceramic stack under a predetermined condition to increase the ratio of metal A in the near-interface region of the internal electrode.
摘要翻译：一种多层陶瓷电容器，其包括含有选自In，Ga，Zn，Bi和Pb中的至少一种金属A并溶解在Ni中以形成固溶体的内部电极。内部电极的面积相对于陶瓷电介质层的内部电极的表面的深度为2nm的接近界面区域的A比为1.4原子％以上的A与Ni的总量。表示近界面区域中的A的比例的原子百分比的值X与表示内部电极的厚度方向的中心区域的A的比率的原子百分比的值Y之间的关系为X-Y≥1.0 。通过在预定条件下退火陶瓷堆叠来形成这种多层电容器，以增加内部电极的近界面区域中的金属A的比例。

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