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公开(公告)号：US09516728B2
公开(公告)日：2016-12-06
申请号：US14484357
申请日：2014-09-12
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takayuki Tsukizawa , Jun Adachi , Katumi Yasunaka
Abstract: An ESD protection device 1 includes an insulating member 10, first and second discharge electrodes 21 and 22, a first outer electrode 31, a second outer electrode 32, and inner conductors 41 and 42. The first and second discharge electrodes 21 and 22 are provided in the insulating member 10. The first outer electrode 31 is provided on an outer surface of the insulating member 10. The first outer electrode 31 is electrically connected to the first discharge electrode 21. The second outer electrode 32 is provided on an outer surface of the insulating member 10. The second outer electrode 32 is electrically connected to the second discharge electrode 22. The inner conductors 41 and 42 are provided in the insulating member 10. The inner conductors 41 and 42 are connected to the first outer electrode 31 or the second outer electrode 32.
Abstract translation: ESD保护装置1包括绝缘构件10，第一和第二放电电极21和22，第一外部电极31，第二外部电极32和内部导体41和42.第一和第二放电电极21和22设置 第一外部电极31设置在绝缘构件10的外表面上。第一外部电极31与第一放电电极21电连接。第二外部电极32设置在绝缘构件10的外表面上 绝缘构件10.第二外部电极32电连接到第二放电电极22.内部导体41和42设置在绝缘构件10中。内部导体41和42连接到第一外部电极31或 第二外部电极32。
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公开(公告)号：US09466970B2
公开(公告)日：2016-10-11
申请号：US14629860
申请日：2015-02-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro Sumi , Jun Adachi , Takayuki Tsukizawa , Kumiko Ishikawa
CPC classification number: H02H3/20 , H01C7/1006 , H01C7/102 , H01C7/105
Abstract: An ESD protection device having high insulation reliability and excellent discharge characteristics is provided. In an ESD protection device including a first and a second discharge electrode disposed to face each other, a discharge auxiliary electrode (18) formed so as to bridge the first and second discharge electrodes, and an insulating substrate holding the first and second discharge electrodes and the discharge auxiliary electrode (18), the discharge auxiliary electrode (18) is formed of an aggregate of metal grains (24) each having a core-shell structure comprising a core portion (22) primarily formed of a first metal and a shell portion (23) primarily formed of a metal oxide containing a second metal, and the aggregate of metal grains (24) further includes an insulating resin (27) which bonds the metal grains (24) to each other.
Abstract translation: 提供具有高绝缘可靠性和优异的放电特性的ESD保护装置。 在包括彼此相对配置的第一和第二放电电极的ESD保护装置中，形成有用于桥接第一和第二放电电极的放电辅助电极（18）以及保持第一和第二放电电极的绝缘基板 放电辅助电极（18），放电辅助电极（18）由金属颗粒（24）的集合体形成，每个金属颗粒具有芯壳结构，该芯壳结构包括主要由第一金属形成的芯部（22）和壳部 （23），其主要由含有第二金属的金属氧化物形成，并且金属颗粒（24）的集合体还包括将金属颗粒（24）彼此粘合的绝缘树脂（27）。
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公开(公告)号：US09374877B2
公开(公告)日：2016-06-21
申请号：US14444245
申请日：2014-07-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro Sumi , Jun Adachi , Takayuki Tsukizawa , Kumiko Ishikawa
CPC classification number: H05F3/00 , H01B3/12 , H01T1/20 , H01T4/12 , H02H9/04 , H05K1/0259 , Y10T156/1092
Abstract: Provided is an ESD protection device having high insulation reliability and good discharge characteristics. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode (18) formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode (18). The discharge auxiliary electrode (18) includes an aggregate of a plurality of metal particles (24) each having a core-shell structure including a core portion (22) that contains, as a main component, a first metal and a shell portion (23) that contains, as a main component, a metal oxide containing a second metal. A pore (26) is present in at least part of the shell portion (23).
Abstract translation: 提供了具有高绝缘可靠性和良好放电特性的ESD保护装置。 ESD保护器件包括以彼此相对配置的第一放电电极和第二放电电极，形成为跨越第一放电电极和第二放电电极之间的放电辅助电极，以及绝缘体 保持第一放电电极，第二放电电极和放电辅助电极（18）的基极。 放电辅助电极（18）包括多个金属颗粒（24）的集合体，每个金属颗粒具有核 - 壳结构，其包括芯部（22），芯部（22）以第一金属和壳部（23）为主要成分 ），其含有作为主要成分的含有第二金属的金属氧化物。 在壳部分（23）的至少一部分中存在孔（26）。
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公开(公告)号：US20160104999A1
公开(公告)日：2016-04-14
申请号：US14972517
申请日：2015-12-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Katsumi Yasunaka , Jun Adachi , Takayuki Tsukizawa
Abstract: An ESD protective device is provided which can lower a discharge start voltage. In an ESD protective device 1, first and second discharge electrodes 3 and 4 are disposed in a substrate 2 in a spaced relation with a discharge gap G interposed therebetween, and a conductor 9 is arranged around the discharge gap G. The conductor 9 has a nonlinear sectional shape in a section of the substrate 2 extending in a direction interconnecting a first principal surface 2a and a second principal surface 2b of the substrate 2 and passing the discharge gap G.
Abstract translation: 提供可以降低放电开始电压的ESD保护装置。 在ESD保护装置1中，第一放电电极3和第二放电电极4以介于其间的放电间隙G以间隔的关系设置在基板2中，导体9布置在放电间隙G周围。导体9具有 在基板2的沿着与基板2的第一主表面2a和第二主表面2b互连并使放电间隙G通过的方向上延伸的部分中的非线性截面形状。
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公开(公告)号：US20150263489A1
公开(公告)日：2015-09-17
申请号：US14723852
申请日：2015-05-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yoshihito Otsubo , Jun Adachi
Abstract: An ESD protection device of the present disclosure includes a ceramic multilayer structure inside which a cavity portion is formed, at least one pair of discharge electrodes arranged inside the ceramic multilayer structure, and outer electrodes formed on the surface of the ceramic multilayer structure and connected to the discharge electrodes, wherein the pair of discharge electrodes are arranged in such a way that one end-face of one discharge electrode and one end-face of the other discharge electrode are opposed to each other through the cavity portion, and the cavity portion is formed as a single cavity occupying a region between the opposed end-faces, regions along other end-faces connected to the opposed end-faces via corner portions, and, on first principal surfaces, regions along the opposed end-faces and regions along the other end-faces.
Abstract translation: 本公开的ESD保护装置包括：陶瓷多层结构，其内部形成有空腔部，至少一对放电电极布置在陶瓷多层结构内部，外电极形成在陶瓷多层结构的表面上，并连接到 放电电极，其中一对放电电极以一个放电电极的一个端面和另一个放电电极的一个端面通过空腔部分彼此相对的方式布置，并且空腔部分是 形成为单个空腔，其占据相对的端面之间的区域，沿着通过角部连接到相对端面的另一端面的区域，以及在第一主表面上沿着相对的端面和沿着相对端面的区域 其他端面。
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Patent Agency Ranking
公开(公告)号：US08975099B2
公开(公告)日：2015-03-10
申请号：US14294203
申请日：2014-06-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Jun Adachi , Jun Urakawa , Issei Yamamoto
CPC classification number: H02H9/04 , H01B1/20 , H01T4/10 , H01T4/12 , H01T21/00 , H02H9/044 , H05K9/0067 , H05K9/0069 , H05K9/0079 , Y10T29/49002
Abstract: An ESD protection device is manufactured such that its ESD characteristics are easily adjusted and stabilized. The ESD protection device includes an insulating substrate, a cavity provided in the insulating substrate, at least one pair of discharge electrodes each including a portion exposed in the cavity, the exposed portions being arranged to face each other, and external electrodes provided on a surface of the insulating substrate and connected to the at least one pair of discharge electrodes. A particulate supporting electrode material having conductivity is dispersed between the exposed portions of the at least one pair of discharge electrodes in the cavity.
Abstract translation: 制造ESD保护装置，使其ESD特性容易调节和稳定。 ESD保护装置包括绝缘基板，设置在绝缘基板中的空腔，至少一对放电电极，每一对放电电极各自包括暴露在空腔中的部分，暴露部分彼此相对布置，外部电极设置在表面上 并连接到所述至少一对放电电极。 具有导电性的颗粒状支撑电极材料分散在空腔中的至少一对放电电极的露出部分之间。
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公开(公告)号：US20140340812A1
公开(公告)日：2014-11-20
申请号：US14444245
申请日：2014-07-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro Sumi , Jun Adachi , Takayuki Tsukizawa , Kumiko Ishikawa
CPC classification number: H05F3/00 , H01B3/12 , H01T1/20 , H01T4/12 , H02H9/04 , H05K1/0259 , Y10T156/1092
Abstract: Provided is an ESD protection device having high insulation reliability and good discharge characteristics. An ESD protection device includes a first discharge electrode and a second discharge electrode that are disposed so as to face each other, a discharge auxiliary electrode (18) formed so as to span between the first discharge electrode and the second discharge electrode, and an insulator base that holds the first discharge electrode, the second discharge electrode, and the discharge auxiliary electrode (18). The discharge auxiliary electrode (18) includes an aggregate of a plurality of metal particles (24) each having a core-shell structure including a core portion (22) that contains, as a main component, a first metal and a shell portion (23) that contains, as a main component, a metal oxide containing a second metal. A pore (26) is present in at least part of the shell portion (23).
Abstract translation: 提供了具有高绝缘可靠性和良好放电特性的ESD保护装置。 ESD保护器件包括以彼此相对配置的第一放电电极和第二放电电极，形成为跨越第一放电电极和第二放电电极之间的放电辅助电极，以及绝缘体 保持第一放电电极，第二放电电极和放电辅助电极（18）的基极。 放电辅助电极（18）包括多个金属颗粒（24）的集合体，每个金属颗粒具有核 - 壳结构，其包括芯部（22），芯部（22）以第一金属和壳部（23）为主要成分 ），其含有作为主要成分的含有第二金属的金属氧化物。 在壳部分（23）的至少一部分中存在孔（26）。
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公开(公告)号：US20140191360A1
公开(公告)日：2014-07-10
申请号：US14208331
申请日：2014-03-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takahiro Sumi , Jun Adachi , Takayuki Tsukizawa
IPC: H01L23/60 , H01L21/768
CPC classification number: H01L23/60 , H01L21/76886 , H01L23/291 , H01L2924/0002 , H01T1/20 , H01T4/10 , H01T4/12 , H01T21/00 , H01L2924/00
Abstract: An ESD protection device includes a first discharge electrode and a second discharge electrode arranged to oppose each other, a discharge supporting electrode formed so as to span between the first and second discharge electrodes, and an insulator substrate that retains the first and second discharge electrodes and the discharge supporting electrode. The discharge supporting electrode is constituted by a group of a plurality of metal particles each coated with a semiconductor film containing silicon carbide. This discharge supporting electrode is obtained by firing a semiconductor-metal complex powder in which a semiconductor powder composed of silicon carbide is fixed to surfaces of metal particles. Selection is made so that the relationship between a coating amount Q [wt %] of the semiconductor powder in the semiconductor-metal complex powder and a specific surface area S [m2/g] of the metal powder satisfies Q/S≧8.
Abstract translation: ESD保护器件包括：第一放电电极和布置成彼此相对的第二放电电极，形成为跨越第一和第二放电电极的放电支撑电极和保持第一和第二放电电极的绝缘体基板;以及 放电辅助电极。 放电支撑电极由各自涂覆有含有碳化硅的半导体膜的多个金属颗粒的组构成。 该放电辅助电极是通过烧结由碳化硅组成的半导体粉末固定在金属颗粒表面上的半导体 - 金属络合物粉末而获得的。 进行选择，使得半导体 - 金属络合物粉末中的半导体粉末的涂布量Q [wt％]与金属粉末的比表面积S [m 2 / g]之间的关系满足Q /S≥8。
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公开(公告)号：US10680415B2
公开(公告)日：2020-06-09
申请号：US16055192
申请日：2018-08-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hiromitsu Hongo , Takahiro Sumi , Takeshi Miki , Jun Adachi , Takayuki Tsukizawa , Takashi Noma
Abstract: An ESD protection device includes first and second discharge electrodes and a discharge auxiliary electrode that is electrically connected to the first and second discharge electrodes. The first and second discharge electrodes are located on or in an insulating substrate to at least partially face each other. The discharge auxiliary electrode includes first metal particles, second metal particles, and a binding agent. The first metal particles have a core-shell structure including a core section mainly including a first metal and a shell section which mainly includes an oxide of a second metal and which includes at least one portion with a cavity. The second metal particles have a core-shell structure including a core section mainly including the first metal and a shell section which mainly includes the oxide of the second metal and which has no cavity.
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公开(公告)号：US10405415B2
公开(公告)日：2019-09-03
申请号：US15296132
申请日：2016-10-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Mayu Suzuki , Jun Adachi , Takayuki Tsukizawa
Abstract: An electro-static discharge protection device includes a ceramic base material, first and second outer electrodes on the outer surface of the ceramic base material, a hollow portion inside the ceramic base material, a first discharge electrode including a first end portion electrically connected to the first outer electrode and a second end portion in the hollow portion, a second discharge electrode including a first end portion electrically connected to the second outer electrode and a second end portion spaced apart from the first discharge electrode in the hollow portion, and a discharge supporting electrode including silicon carbide and between the second end portion of the first discharge electrode and the second end portion of the second discharge electrode. The elemental alkali metal in the ceramic base material is about 3 percent by weight or less.
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