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公开(公告)号：US10037851B2
公开(公告)日：2018-07-31
申请号：US15410928
申请日：2017-01-20
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Wada , Kohei Shimada , Kenji Takagi , Tomomi Koga , Tomotaka Hirata , Hitoshi Nishimura , Hiroki Awata , Sui Uno
IPC: H01G4/30 , H01G2/24 , H01G4/12 , H01G4/224 , H01G4/012 , H01G4/242 , H05K1/18 , H05K3/30 , H01G4/232 , H01G4/248
CPC classification number: H01G4/30 , H01G2/24 , H01G4/012 , H01G4/12 , H01G4/1209 , H01G4/1227 , H01G4/1236 , H01G4/1245 , H01G4/224 , H01G4/232 , H01G4/242 , H01G4/248 , H05K1/181 , H05K3/30 , H05K2201/10015
Abstract: A multilayer ceramic capacitor includes a laminated body including an inner layer portion including ceramic dielectric layers and internal electrodes, and outer layer portions including ceramic dielectric layers. External electrodes connected to the internal electrodes are provided on both ends of the laminated body. The main constituent of the inner layer portion is a perovskite-type compound represented by ABO3. The outer layer portions include first outer layers and second outer layers respectively containing oxides that differ from each other in main constituents, and boundary reaction layers are provided between the first outer layers and the second outer layers. First ceramic dielectric layers outside the boundary reaction layers differ in color from second ceramic dielectric layers inside the boundary reaction layers.
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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：US20150287535A1
公开(公告)日：2015-10-08
申请号：US14744123
申请日：2015-06-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Toru Nakanishi , Toshihiro Okamatsu , Akihiro Tsuru , Hiroyuki Wada
IPC: H01G4/30 , H01G4/12 , H01G4/01 , C04B35/468 , H01G4/224
CPC classification number: H01G4/30 , C04B35/4682 , C04B2235/3206 , C04B2235/3224 , C04B2235/3225 , C04B2235/3244 , C04B2235/3262 , C04B2235/3418 , C04B2235/79 , H01G4/0085 , H01G4/01 , H01G4/1227 , H01G4/1245 , H01G4/224
Abstract: A monolithic ceramic capacitor that contains a perovskite compound including Ba and Ti and at least one type of element selected from Gd, Tb, and Dy, and contains elements selected from Y, Si, Mn, Mg, and Zr. The content a of at least one element selected from Gd, Tb, and Dy satisfies 0.2≦a≦0.8, the content b of Y satisfies 0.0≦b≦0.5, the content c of Si satisfies 0.0≦c≦2.5, the content d of Mn satisfies 0.0≦d≦0.25, the content e of Mg satisfies 0.0≦e≦1.2, the content f of Zr satisfies 0.0≦f≦0.5, and the molar ratio m of the content of Ba/(f+the content of Ti) satisfies 0.99≦m≦1.01, where the total content of Ti is 100 parts by mole.
Abstract translation: 含有包含Ba和Ti的钙钛矿化合物和选自Gd，Tb和Dy中的至少一种元素，并含有选自Y，Si，Mn，Mg和Zr的元素的叠层陶瓷电容器。 选自Gd，Tb和Dy中的至少一种元素的含量a满足0.2＆nlE; a＆nlE; 0.8，Y的含量b满足0.0＆lt; nlE; b＆nlE; 0.5，Si的含量c满足0.0＆nlE; c＆nlE; Mn的含量d满足0.0＆nlE; d＆nlE; 0.25，Mg的含量e满足0.0＆nlE; e＆nlE; 1.2，Zr的含量f满足0.0＆nlE; f＆nlE; 0.5，并且Ba / （f + Ti的含量）满足0.99＆nlE; m＆nlE; 1.01，其中Ti的总含量为100份摩尔。
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公开(公告)号：US09460852B2
公开(公告)日：2016-10-04
申请号：US14210786
申请日：2014-03-14
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Hiroyuki Wada , Kohei Shimada , Kenji Takagi , Tomomi Koga , Tomotaka Hirata , Hitoshi Nishimura , Hiroki Awata , Sui Uno
CPC classification number: H01G4/1227 , H01G4/1218 , H01G4/30
Abstract: A laminated ceramic capacitor having a laminated body composed of a plurality of ceramic layers for inner layers; a plurality of internal electrodes at the interfaces between the plurality of ceramic layers for inner layers; and a plurality of ceramic layers for outer layers, provided on the top and bottom so as to sandwich the plurality of ceramic layers for inner layers. The ceramic layers for inner layers are composed of a material containing a multiple oxide including an alkaline-earth metal. The ceramic layers for outer layers respectively have TiO2 ceramic layers containing TiO2 as their main constituent for certain layers including the outermost layers, and multiple oxide ceramic layers containing a multiple oxide including an alkaline-earth metal for the other layers.
Abstract translation: 一种层叠陶瓷电容器，具有由多个内层用陶瓷层构成的层叠体， 在所述多个用于内层的陶瓷层之间的界面处的多个内部电极; 以及多个用于外层的陶瓷层，设置在顶部和底部，以便将多个陶瓷层夹在内层中。 内层的陶瓷层由含有碱土类金属的多重氧化物的材料构成。 用于外层的陶瓷层分别具有包含TiO 2作为其主要成分的TiO 2陶瓷层，其中包括最外层的某些层，以及包含用于其它层的包含碱土金属的多重氧化物的多个氧化物陶瓷层。
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公开(公告)号：US20140285948A1
公开(公告)日：2014-09-25
申请号：US14210786
申请日：2014-03-14
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Hiroyuki Wada , Kohei Shimada , Kenji Takagi , Koga Tomomi , Tomotaka Hirata , Hitoshi Nishimura , Hiroki Awata , Sui Uno
IPC: H01G4/12
CPC classification number: H01G4/1227 , H01G4/1218 , H01G4/30
Abstract: A laminated ceramic capacitor having a laminated body composed of a plurality of ceramic layers for inner layers; a plurality of internal electrodes at the interfaces between the plurality of ceramic layers for inner layers; and a plurality of ceramic layers for outer layers, provided on the top and bottom so as to sandwich the plurality of ceramic layers for inner layers. The ceramic layers for inner layers are composed of a material containing a multiple oxide including an alkaline-earth metal. The ceramic layers for outer layers respectively have TiO2 ceramic layers containing TiO2 as their main constituent for certain layers including the outermost layers, and multiple oxide ceramic layers containing a multiple oxide including an alkaline-earth metal for the other layers.
Abstract translation: 一种层叠陶瓷电容器，具有由多个内层用陶瓷层构成的层叠体， 在所述多个用于内层的陶瓷层之间的界面处的多个内部电极; 以及多个用于外层的陶瓷层，设置在顶部和底部，以便将多个陶瓷层夹在内层中。 内层的陶瓷层由含有碱土类金属的多重氧化物的材料构成。 用于外层的陶瓷层分别具有包含TiO 2作为其主要成分的TiO 2陶瓷层，其中包括最外层的某些层，以及包含用于其它层的包含碱土金属的多重氧化物的多个氧化物陶瓷层。
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Patent Agency Ranking
6.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：US09236187B2
公开(公告)日：2016-01-12
申请号：US14621450
申请日：2015-02-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiroyuki Wada , Kohei Shimada , Kenji Takagi , Tomomi Koga , Tomotaka Hirata , Hitoshi Nishimura , Hiroki Awata , Sui Uno
CPC classification number: H01G4/30 , H01G4/012 , H01G4/12 , H01G4/1209 , H01G4/1227 , H01G4/1245 , H01G4/224 , H01G4/248
Abstract: A multilayer ceramic capacitor includes a ceramic main body including an inner layer portion including third ceramic layers and a plurality of inner electrodes arranged at interfaces between the third ceramic layers, and first and second outer layer portions respectively including first and second ceramic layers, the first and second ceramic layers being arranged vertically so as to sandwich the inner layer portion. The third ceramic layers and the first and second outer layer portions contain a perovskite-type compound represented by ABO3 where A contains one or more of Ba, Sr, and Ca, B contains one or more of Ti, Zr, and Hf, and O represents oxygen) as a main component. Where a rare-earth element concentration (CR) in the third ceramic layers is compared to a rare-earth element concentration (Cr) in outermost layer portions including at least outermost surfaces of the first and second outer layer portions, CR>Cr (inclusive of Cr=0).
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公开(公告)号：US09136058B2
公开(公告)日：2015-09-15
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部件，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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公开(公告)号：US20150077897A1
公开(公告)日：2015-03-19
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：US20220130608A1
公开(公告)日：2022-04-28
申请号：US17496044
申请日：2021-10-07
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Taku Mizuno , Keisuke Araki , Hiroyuki Wada
IPC: H01G4/12 , H01G4/30 , C04B35/468
Abstract: A dielectric ceramic that includes multiple crystal grains, each of the multiple crystal grains having an interface, a barium titanate (BaTiO3)-based compound as a main component thereof, and a rare earth element. The dielectric ceramic has a cross-section in which the multiple crystal grains has a concentration varying region, a high concentration region, and a low concentration region. The concentration varying region has an RE/Ti ratio differing by 3% or more. The high concentration region has an RE/Ti ratio of 5% to 20%. The low concentration region has an RE/Ti ratio of 0% to 2%.
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