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    Monolithic ceramic capacitor containing perovskite compound
    3.
    发明授权
    Monolithic ceramic capacitor containing perovskite compound 有权
    含有钙钛矿化合物的单片陶瓷电容器

    公开(公告)号：US09390855B2

    公开(公告)日：2016-07-12

    申请号：US14582260

    申请日：2014-12-24

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Yoshito Saito ,  Jun Ikeda ,  Kazuhisa Uchida

    IPC: H01G4/12 ,  H01G4/30 ,  H01G4/008 ,  G01N23/225 ,  H01G4/232

    CPC classification number: H01G4/1218 ,  G01N23/2252 ,  H01G4/0085 ,  H01G4/1227 ,  H01G4/2325 ,  H01G4/30

    Abstract: In a monolithic ceramic capacitor, ceramic layers defining inner layers are mainly composed of a perovskite compound containing Ba and Ti. A portion of an electrically effective section in the ceramic layers near a connecting portion between the inner electrodes and an outer electrode undergoes mapping analysis by an energy-dispersive method. In regions of the resulting mapping image, the regions extending from the interfaces between the inner electrodes and a corresponding one of the ceramic layers to positions about ⅓ of the thickness of the ceramic layer in the stacking direction, ((L2−L3)/L1)×100≧50 is satisfied, where L1 represents the total length of grain boundaries, L2 represents the total length of grain boundaries where a rare-earth element is present, and L3 represents the total length of portions where the grain boundaries where the rare-earth element is present are overlapped with grain boundaries with a specific element present.

    Abstract translation: 在单片陶瓷电容器中，限定内层的陶瓷层主要由含有Ba和Ti的钙钛矿化合物组成。 陶瓷层中靠近内部电极和外部电极之间的连接部分的电气部分的一部分通过能量分散方法进行映射分析。 在所得到的映射图像的区域中，从内部电极和对应的陶瓷层之间的界面延伸到层叠方向上约为陶瓷层厚度的1/3的区域（（L2-L3）/ L1 ）×100≥50，其中L1表示晶界的总长度，L2表示存在稀土元素的晶界的总长度，L3表示稀土元素的晶界的部分的总长度 存在的地层元素与存在特定元素的晶界重叠。

    Multilayer ceramic electronic component
    4.
    发明授权
    Multilayer ceramic electronic component 有权

    公开(公告)号：US10008331B2

    公开(公告)日：2018-06-26

    申请号：US15345571

    申请日：2016-11-08

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Jun Ikeda ,  Kota Zenzai

    IPC: H01G4/30 ,  H01G4/232 ,  H01G4/012 ,  H01G4/12 ,  H01G4/248 ,  H01G4/005 ,  H01G4/228

    CPC classification number: H01G4/30 ,  H01G4/005 ,  H01G4/012 ,  H01G4/12 ,  H01G4/228 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/248

    Abstract: A multilayer ceramic electronic component includes a ceramic element body including internal electrodes and external electrodes electrically connected to respective internal electrodes. Each of the external electrodes includes a sintered metal layer including glass and metal and a conductive resin layer including resin and metal particles. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and L1/L2 is about 0.2 or more and about 1.5 or less, where L1 is a length along the interface at which the glass of the sintered metal layer is exposed at the interface, and L2 is a length along the interface at which the metal of the sintered metal layer is exposed at the interface.

    MULTILAYER CERAMIC ELECTRONIC COMPONENT
    7.
    发明申请
    MULTILAYER CERAMIC ELECTRONIC COMPONENT 有权
    多层陶瓷电子元件

    公开(公告)号：US20160196922A1

    公开(公告)日：2016-07-07

    申请号：US15071646

    申请日：2016-03-16

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： TAKASHI OMORI ,  Seiji Koga ,  Jun Ikeda

    IPC: H01G4/30 ,  H01G4/248 ,  H01G4/12 ,  H01G4/008

    CPC classification number: H01G4/30 ,  H01G4/008 ,  H01G4/0085 ,  H01G4/12 ,  H01G4/1227 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/248

    Abstract: A multilayer ceramic electronic component includes a ceramic body having an end surface and a side surface adjacent to thereto such that the end surface and the side surface meet at an edge. The ceramic body has a plurality of internal electrodes with adjacent pairs of the internal electrodes being separated by a respective ceramic layer. An external electrode containing a metal, an inorganic component and voids is electrically connected to at least some of the internal electrodes and both covers the end surface and extends over the edge onto the side surface to form an extending-around portion which extends at least 50 μm onto the side surface as measured in a direction perpendicular to the edge and ends at a leading edge remote from the edge. A portion of the extending-around area which extends 50 μm from the leading edge towards the edge has an average occupancy area ratio which is at least 25 but not greater than 75. The occupancy area ratio is the ratio between the area of the conductive component and an area of the inorganic component on the one hand to the area of the conductive component, the area of the inorganic component and the area of the voids on the other.

    Abstract translation: 多层陶瓷电子部件包括具有端面和与其相邻的侧面的陶瓷体，使得端面和侧面在边缘相交。 陶瓷体具有多个内部电极，相邻的内部电极对由相应的陶瓷层分隔开。 含有金属，无机成分和空隙的外部电极与至少一些内部电极电连接并且两者都覆盖端面并且在边缘上方延伸到侧面上以形成延伸至少50°的延伸部分 微米在垂直于边缘的方向上测量的侧表面，并且在远离边缘的前缘处结束。 从前缘向边缘延伸50μm的延伸区域的一部分具有至少25但不大于75的平均占有面积比。占据面积比是导电部件的面积之比 无机成分的面积一方面与导电性成分的面积，无机成分的面积和空隙的面积相对应。

    MULTILAYER CERAMIC ELECTRONIC COMPONENT
    8.
    发明申请
    MULTILAYER CERAMIC ELECTRONIC COMPONENT 有权
    多层陶瓷电子元件

    公开(公告)号：US20160196920A1

    公开(公告)日：2016-07-07

    申请号：US15067618

    申请日：2016-03-11

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： SEIJI KOGA ,  Takashi Omori ,  Jun Ikeda

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

    CPC classification number: H01G4/1245 ,  H01G4/0085 ,  H01G4/012 ,  H01G4/1227 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/248 ,  H01G4/30

    Abstract: A multilayer ceramic electronic component in which an interface of an edge region of an external electrode that extends around to a side surface of a ceramic body and the ceramic configuring a surface of the ceramic body, an inorganic matter is present containing 26 mol % or more and less than 45 mol % of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.154 or more, or an inorganic matter is present containing 45 mol % or more of SiO2 and having a molar ratio (TiO2+ZrO2)/(SiO2+TiO2+ZrO2) of 0.022 or more. Furthermore, the inorganic matter may contain B2O3 having a molar ratio relative to SiO2 within 0.25≦B2O3/SiO2≦0.5.

    Abstract translation: 一种多层陶瓷电子部件，其中外部电极的边缘区域的延伸到陶瓷体侧表面的界面和构成陶瓷体表面的陶瓷，存在含有26摩尔％以上的无机物质的多层陶瓷电子部件 并且摩尔比（TiO 2 + ZrO 2）/（SiO 2 + TiO 2 + ZrO 2）为0.154以上的SiO 2的摩尔比小于45摩尔％，或者含有45摩尔％以上的SiO 2的无机物，摩尔比 （TiO 2 + ZrO 2）/（SiO 2 + TiO 2 + ZrO 2）为0.022以上。 此外，无机物质可以含有相对于SiO 2的摩尔比在0.25＆lt; 1EE; B 2 O 3 / SiO 2和N e E 0.5中的B 2 O 3。

    Multilayer ceramic electronic component
    10.
    发明授权
    Multilayer ceramic electronic component 有权
    多层陶瓷电子元件

    公开(公告)号：US09520236B2

    公开(公告)日：2016-12-13

    申请号：US14677059

    申请日：2015-04-02

    Applicant: Murata Manufacturing Co., Ltd.

    Inventor： Jun Ikeda ,  Kota Zenzai

    IPC: H01G4/232 ,  H01G4/30 ,  H01G4/012 ,  H01G4/12 ,  H01G4/248

    CPC classification number: H01G4/30 ,  H01G4/005 ,  H01G4/012 ,  H01G4/12 ,  H01G4/228 ,  H01G4/232 ,  H01G4/2325 ,  H01G4/248

    Abstract: A multilayer ceramic electronic component includes a ceramic element body including internal electrodes and external electrodes electrically connected to respective internal electrodes. Each of the external electrodes includes a sintered metal layer including glass and metal and a conductive resin layer including resin and metal particles. In a cross section of the multilayer ceramic capacitor, at an interface between the sintered metal layer and the conductive resin layer, recesses having a shape in which a dimension of an inner portion is larger than a dimension of an inlet are present, and L1/L2 is about 0.2 or more and about 1.5 or less, where L1 is a length along the interface at which the glass of the sintered metal layer is exposed at the interface, and L2 is a length along the interface at which the metal of the sintered metal layer is exposed at the interface.

    Abstract translation: 多层陶瓷电子部件包括陶瓷元件体，其包括内部电极和与各自的内部电极电连接的外部电极。 每个外部电极包括包括玻璃和金属的烧结金属层和包括树脂和金属颗粒的导电树脂层。 在多层陶瓷电容器的截面中，在烧结金属层与导电性树脂层之间的界面处存在具有内部尺寸大于入口尺寸的形状的凹部，L1 / L2为约0.2以上且约1.5以下，其中，L1是沿着烧结金属层的玻璃在界面露出的界面的长度，L2是沿烧结金属的金属的界面的长度 金属层在界面处露出。

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