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公开(公告)号：US09633793B2
公开(公告)日：2017-04-25
申请号：US14844346
申请日：2015-09-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yasuhiro Nishisaka , Yoshito Saito , Makoto Ogawa
CPC classification number: H01G4/30 , H01G4/0085 , H01G4/12 , H01G4/2325
Abstract: A multilayer ceramic capacitor that contains at least one kind of a first element that forms a covalent hydride with hydrogen (except for an element generating a hydride having a boiling point of less than 125° C.) and a second element that forms a hydride in a boundary region with hydrogen between an outermost plating layer constituting an external electrode and a dielectric layer constituting a ceramic element body.
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2.发明授权公开(公告)号：US11581142B2
公开(公告)日：2023-02-14
申请号：US16987427
申请日：2020-08-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hisashi Fujii , Yoshito Saito , Masaki Masuda , Hidekazu Tamura
IPC: H01G4/30 , H01G4/12 , H01G4/005 , C04B35/468 , C04B35/626 , C04B35/64
Abstract: A multilayer electronic component includes a multilayer body including dielectric layers and inner electrode layers, the multilayer body including an electrode facing portion in which the inner electrode layers are laminated to face each other with the dielectric layers interposed therebetween. The multilayer body has a thickness of at least about 1.5 mm in a lamination direction, a length of at least about 3.0 mm, and a width of at least about 1.5 mm. Each of the dielectric layers includes Ba, Ti, and Cl. A Cl concentration C1 in the entire electrode facing portion satisfies about 10 wtppm
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公开(公告)号：US09892854B2
公开(公告)日：2018-02-13
申请号：US15067459
申请日：2016-03-11
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yasuhiro Nishisaka , Yoshito Saito
CPC classification number: H01G4/2325 , H01G4/0085 , H01G4/12 , H01G4/232 , H01G4/30
Abstract: A multilayer ceramic capacitor contains Ni in internal electrodes, and includes a sintered metal layer containing Cu in external electrodes. At a joined portion between each internal electrode and each external electrode, mutual diffusion layers of Cu and Ni extend across the internal and external electrodes. On each internal electrode, a mutual diffusion layer is present with a thickness t1, which is defined by a dimension from a first end surface or a second end surface to an interior end in a longitudinal direction, not smaller than about 0.5 μm and not greater than about 5 μm. On each external electrode, a mutual diffusion layer is present with a thickness t2, which is defined by a dimension from the first end surface or the second end surface to an exterior end in the longitudinal direction, not smaller than about 2.5% and not greater than about 33.3% of a thickness t0 of a sintered metal layer.
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公开(公告)号：US09478357B2
公开(公告)日：2016-10-25
申请号：US14549795
申请日：2014-11-21
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Hiroyuki Wada , Yosuke Hirata , Takashi Hiramatsu , Yoshito Saito , Hideaki Tsuji , Hiroyuki Ukai
CPC classification number: H01G4/258 , H01C7/1006 , H01C7/102 , H01C7/18 , H01G4/012 , H01G4/12 , H01G4/30
Abstract: A multilayer ceramic electronic component that has a multilayer portion having an outer layer portion adjacent region including an area in contact with an outer layer portion that forms a thermal-shock absorbing portion that includes curved ceramic layers and inner electrode layers smoothly varying in thickness from point to point. A region to an inside of the thermal-shock absorbing portion forms a normal multilayer portion that includes ceramic layers with less curvature than the ceramic layers in the thermal-shock absorbing portion and inner electrode layers with less variation in thickness from point to point in a direction along a principal surface of the outer layer portion than the inner electrode layers in the thermal-shock absorbing portion.
Abstract translation: 一种多层陶瓷电子部件，具有多层部分，该多层部分具有外层部分相邻区域，所述多层部分包括与外层部分接触的区域，所述外层部分形成热冲击吸收部分，该热冲击吸收部分包括弯曲陶瓷层和厚度从点平滑变化的内部电极层 指出。 热冲击吸收部分的内部的区域形成通常的多层部分，其包括比热冲击吸收部分中的陶瓷层少的曲率的陶瓷层，以及在热冲击吸收部分的内部电极层中的点厚度变化较小的陶瓷层 沿着热冲击吸收部的内侧电极层的外层部的主面的方向。
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公开(公告)号：US09263190B2
公开(公告)日：2016-02-16
申请号：US14541212
申请日：2014-11-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kazuhisa Uchida , Yoshito Saito , Jun Ikeda
CPC classification number: H01G4/1227 , H01G4/012 , H01G4/1218 , H01G4/30
Abstract: In a multilayer ceramic capacitor, an inner ceramic layer includes a perovskite-type compound containing Ba and Ti. A region within an electrically effective portion of the inner ceramic layers sandwiched between inner electrodes, which is near an area where inner and outer electrodes connect to each other, is subjected to a mapping analysis using EDS. ((L2−L3)/L1)×100≧50 is satisfied, L1 denotes a total length of ceramic grain boundaries detected from a TEM transmission image, L2 denotes a total length of grain boundaries, detected from a mapping image and the TEM transmission image, where the rare earth element is present, and L3 denotes a total length of portions, detected from a mapping image and the TEM transmission image, in which the grain boundaries where the rare earth element is present and grain boundaries where at least one of Mn, Mg, and Si is present are overlapped.
Abstract translation: 在多层陶瓷电容器中，内部陶瓷层包括含有Ba和Ti的钙钛矿型化合物。 夹在内部电极之间的内部陶瓷层的电学有效部分内的区域，其内部和外部电极彼此连接的区域附近，使用EDS进行映射分析。 （（L2-L3）/ L1）×100≥50，L1表示从TEM透射图像检测出的陶瓷晶界的总长度，L2表示从映射图像和TEM透射检测的晶界的总长度 图像，其中存在稀土元素，L3表示从映射图像和TEM透射图像检测的部分的总长度，其中存在稀土元素的晶界和晶界，其中至少一个 Mn，Mg和Si存在重叠。
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Patent Agency Ranking
公开(公告)号：US10483041B2
公开(公告)日：2019-11-19
申请号：US14668220
申请日：2015-03-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yoshito Saito , Satoshi Matsuno , Shinji Otani , Tomochika Miyazaki , Yasuhiro Nishisaka
Abstract: A first outer electrode and first inner electrodes are supplied with an anode potential and a second outer electrode and second inner electrodes are supplied with a cathode potential when a monolithic ceramic capacitor is mounted and in use. The first outer electrode supplied with the anode potential has a thickness that is greater than a thickness of the second outer electrode supplied with the cathode potential.
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7.发明申请公开(公告)号：US20140078641A1
公开(公告)日：2014-03-20
申请号：US13956616
申请日：2013-08-01
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Yosuke Hirata , Hideaki Tsuji , Nagato Omori , Hiroyuki Wada , Takashi Hiramatsu , Yoshito Saito
CPC classification number: H01G4/005 , B32B18/00 , C04B35/4682 , C04B35/62685 , C04B2235/3206 , C04B2235/3215 , C04B2235/3224 , C04B2235/3236 , C04B2235/3262 , C04B2235/3418 , C04B2235/5445 , C04B2235/656 , C04B2235/6562 , C04B2235/6567 , C04B2235/6582 , C04B2235/6584 , C04B2235/6588 , C04B2235/721 , C04B2235/785 , C04B2235/786 , C04B2235/79 , C04B2237/346 , C04B2237/588 , C04B2237/704 , H01G4/012 , H01G4/12 , H01G4/1209 , H01G4/30
Abstract: A laminated body is divided into a large grain region and a small grain region. The large grain region is located outside the small grain region, and a boundary surface between the regions is located inside the outer surface of the laminated body while surrounding a section in which internal electrodes are present in the laminated body. To obtain the laminated body, firing is carried out with a profile in which the average rate of increase from room to the maximum temperature is 40° C./second or more.
Abstract translation: 层叠体分为大颗粒区域和小颗粒区域。 大颗粒区域位于小颗粒区域的外侧，并且区域之间的边界面位于层叠体的外表面内部，同时围绕层叠体中存在内部电极的部分。 为了获得层叠体，以从平均室温到最高温度的平均增加率为40℃/秒以上的轮廓进行烧成。
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公开(公告)号：US20160086733A1
公开(公告)日：2016-03-24
申请号：US14853088
申请日：2015-09-14
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yoshito Saito , Yasuhiro Nishisaka , Makoto Ogawa , Akihiro Tsuru
CPC classification number: H01G4/2325 , H01G4/0085 , H01G4/1227 , H01G4/30
Abstract: A multilayer ceramic capacitor that includes a layered body in which dielectric layers and internal electrode layers are layered alternately, an external electrode on a surface of the layered body and a plating layer on a surface of the external electrode. The external electrode contains Cu, and a protective layer containing Cu2O is provided at a joining portion between the external electrode and the plating layer. When heat is applied to the layered body after the external electrode is removed, a ratio of an arithmetic mean value Xa of a quantity of hydrogen generated per unit temperature in a range higher than or equal to 350° C. with respect to an arithmetic mean value Y of a quantity of hydrogen generated per unit temperature in a range higher than or equal to 230° C. and lower than or equal to 250° C. (Xa/Y) is less than or equal to 0.66.
Abstract translation: 一种层叠陶瓷电容器，其包括交替层叠电介质层和内部电极层的层叠体，层叠体的表面上的外部电极和外部电极的表面上的镀层。 外部电极含有Cu，在外部电极和镀层之间的接合部分设置有含有Cu2O的保护层。 当在除去外部电极之后对层叠体施加热量时，相对于算术平均值，在单位温度下产生的氢的量的算术平均值Xa在高于或等于350℃的范围内 在高于或等于230℃且低于或等于250℃的范围内每单位温度产生的氢气量的值Y（Xa / Y）小于或等于0.66。
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公开(公告)号：US20160071647A1
公开(公告)日：2016-03-10
申请号：US14844346
申请日：2015-09-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： YASUHIRO NISHISAKA , Yoshito Saito , Makoto Ogawa
CPC classification number: H01G4/30 , H01G4/0085 , H01G4/12 , H01G4/2325
Abstract: A multilayer ceramic capacitor that contains at least one kind of a first element that forms a covalent hydride with hydrogen (except for an element generating a hydride having a boiling point of less than 125° C.) and a second element that forms a hydride in a boundary region with hydrogen between an outermost plating layer constituting an external electrode and a dielectric layer constituting a ceramic element body.
Abstract translation: 一种多层陶瓷电容器，其包含至少一种与氢形成共价氢化物的第一元素（除了产生沸点小于125℃的氢化物的元素除外）和形成氢化物的第二元素 在构成外部电极的最外侧镀层与构成陶瓷元件体的电介质层之间的氢的边界区域。
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公开(公告)号：US20130222973A1
公开(公告)日：2013-08-29
申请号：US13858989
申请日：2013-04-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Wada , Yosuke Hirata , Takashi Hiramatsu , Yoshito Saito , Hideaki Tsuji , Hiroyuki Ukai
CPC classification number: H01G4/30 , H01G4/005 , H01G4/12 , H01G4/1218
Abstract: A laminated ceramic capacitor including a laminated body having a plurality of stacked ceramic layers and internal electrodes located between the ceramic layers. The internal electrodes have a plurality of ceramic columnar members formed therein, which project into the internal electrodes from interfaces between the ceramic layers and the internal electrodes, but do not penetrate in the thickness direction of the internal electrodes.
Abstract translation: 一种层叠陶瓷电容器，包括具有多个层叠陶瓷层和位于陶瓷层之间的内部电极的层叠体。 内部电极具有形成在其中的多个陶瓷柱状构件，其从陶瓷层和内部电极之间的界面突出到内部电极中，但不会在内部电极的厚度方向上穿透。
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