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1. 发明授权

US10153079B2 Laminated coil component and method of manufacturing the same 有权
公开(公告)号：US10153079B2
公开(公告)日：2018-12-11
申请号：US15611993
申请日：2017-06-02
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Hiroki Hashimoto , Masayuki Oishi
IPC分类号： H01F5/00 , H01F27/28 , H01F27/245 , H01F41/04
摘要： A laminated coil component is configured by laminating a plurality of magnetic layers and a plurality of coil conductors in a lamination direction. In a cross-section taken along a width direction of the coil conductors, each coil conductor has a first surface on one side in the lamination direction, a second surface on another side in the lamination direction, and side surfaces on both sides in the width direction. The second surface makes contact with the magnetic layer. A hollow cavity portion is formed between the magnetic layer, and the first surface and both side surfaces. The hollow cavity portion has a first extended portion, extending outward in a direction intersecting with the lamination direction, on the first surface side, on at least one of both end sides in the width direction.

2. 发明授权

US11217388B2 Multilayer inductor manufacturing method and multilayer inductor 有权
公开(公告)号：US11217388B2
公开(公告)日：2022-01-04
申请号：US16006592
申请日：2018-06-12
申请人： Murata Manufacturing Co., Ltd.
发明人： Yasuhiro Itani , Hiroki Hashimoto , Masayuki Oishi
IPC分类号： H01F17/00 , H01F41/04 , H01F27/24 , H01F27/28
摘要： A multilayer inductor manufacturing method includes stacking a first coil conductor layer on a first magnetic layer; stacking a first burn-away material on side surfaces of the first coil conductor layer; stacking a second magnetic layer on the first burn-away material and first magnetic layer; stacking a second burn-away material on the second magnetic layer laterally outside an upper surface of the first coil conductor layer; stacking a second coil conductor layer on the upper surface of the first coil conductor layer and second burn-away material; stacking a third burn-away material on side surfaces and an upper surface of the second coil conductor layer; stacking a third magnetic layer on side surfaces of the third burn-away material and the second magnetic layer; stacking a fourth magnetic layer on the third burn-away material and the third magnetic layer; and burning away the first, second, and third burn-away materials via firing.

3. 发明授权

US11145453B2 Coil component 有权
公开(公告)号：US11145453B2
公开(公告)日：2021-10-12
申请号：US16175585
申请日：2018-10-30
申请人： Murata Manufacturing Co., Ltd.
发明人： Masayuki Oishi , Yasuhiro Itani , Hiroki Hashimoto , Takuma Shiro
IPC分类号： H01F27/29 , H01F27/28 , H01F17/00 , H01F41/04
摘要： A coil component includes an element and a coil that is provided inside the element and that is spirally wound. The coil includes a plurality of coil conductor layers and an extended conductor layer, which are laminated in a first direction. The extended conductor layer overlaps a side gap portion, which is situated on an outer side of a region of the element that is surrounded by the coil conductor layers, and extends so as to reach an outer surface of the element. The element includes a first stress relaxation layer that contacts the coil conductor layers, and a second stress relaxation layer that, while extending along the extended conductor layer, contacts a coil-conductor-layer side of the extended conductor layer, and is positioned inside the side gap portion without reaching the outer surface of the element.

4. 再颁专利

USRE46353E1 Multilayer coil component and method for manufacturing the same 有权
公开(公告)号：USRE46353E1
公开(公告)日：2017-03-28
申请号：US14553613
申请日：2014-11-25
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Masaharu Konoue , Yukio Maeda , Tatsuya Mizuno , Hiroki Hashimoto , Mitsuru Ueda
IPC分类号： H01F5/00 , H01F17/00 , H01F17/04
CPC分类号： H01F5/00 , H01F17/0013 , H01F17/04
摘要： A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.

5. 发明授权

US09455082B2 Electronic component 有权
标题翻译：电子元器件
公开(公告)号：US09455082B2
公开(公告)日：2016-09-27
申请号：US14887455
申请日：2015-10-20
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Kaoru Tachibana , Hiroki Hashimoto
IPC分类号： H01F5/00 , H01F21/02 , H01F27/28 , H01F17/00
CPC分类号： H01F27/2804 , H01F17/0013 , H01F2027/2809
摘要： An electronic component having; a multilayer body including insulating layers stacked on one another; a spiral coil including coil conductors provided on the insulating layers and a first via-hole conductor piercing through at least one of the insulating layers to connect the coil conductors to each other; a parallel conductor provided on one of the insulating layers; and a second via-hole conductor piercing through at least one of the insulating layers to connect the parallel conductor in parallel to one of the coil conductors provided on the insulating layer different from the insulating layer on which the parallel conductor is provided. A portion of the coil conductor not connected in parallel to the parallel conductor at least partly has a greater width than a portion of the coil conductor connected in parallel to the parallel conductor other than a contact point with the second via-hole conductor.
摘要翻译：电子部件具有：包括彼此堆叠的绝缘层的多层体; 螺旋线圈，其包括设置在绝缘层上的线圈导体和穿过至少一个绝缘层的第一通孔导体，以将线圈导体彼此连接; 设置在绝缘层之一上的平行导体; 以及穿过至少一个所述绝缘层的第二通孔导体，以将所述并联导体平行地连接到设置在与设置有所述平行导体的绝缘层不同的绝缘层上的线圈导体之一。线圈导体未平行于平行导体的部分至少部分地具有比除与第二通孔导体的接触点平行于平行导体连接的线圈导体的部分更大的宽度。

6. 发明授权

US09240273B2 Electronic component and method for producing same 有权
标题翻译：电子元件及其制造方法
公开(公告)号：US09240273B2
公开(公告)日：2016-01-19
申请号：US14087754
申请日：2013-11-22
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Hiroki Hashimoto
IPC分类号： H01F5/00 , H01F27/28 , H01F17/00
CPC分类号： H01F27/2804 , H01F17/0013 , H01F2017/004
摘要： An electronic component having a laminate formed by laminating a plurality of insulator layers and a helical coil provided in the laminate, the coil including first and second coil conductors, and via-hole conductors provided so as to pierce through the insulator layers. The first and second coil conductors are opposed to each other via the insulator layers in a direction of lamination. The first coil conductor has a first side opposed to the second coil conductor and having a convex portion in a cross section normal to a direction in which the first coil conductor extends. The second coil conductor has a second side opposed to the first coil conductor and has a concave portion in a cross section normal to a direction in which the second coil conductor extends. The concave portion overlaps the convex portion in the direction of lamination.
摘要翻译：一种电子部件，其具有通过层叠多个绝缘体层而形成的层压体和设置在层压体中的螺旋线圈，所述线圈包括第一和第二线圈导体，以及设置成穿过绝缘体层的通孔导体。第一和第二线圈导体经由层叠方向上的绝缘体层彼此相对。第一线圈导体具有与第二线圈导体相对的第一侧，并且具有与第一线圈导体延伸的方向垂直的横截面的凸部。第二线圈导体具有与第一线圈导体相对的第二侧，并且具有与第二线圈导体延伸的方向垂直的横截面的凹部。凹部与层叠方向的凸部重叠。

7. 再颁专利

USRE45645E1 Multilayer coil component and method for manufacturing the same 有权
标题翻译：多层线圈组件及其制造方法
公开(公告)号：USRE45645E1
公开(公告)日：2015-08-04
申请号：US13973827
申请日：2013-08-22
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Masaharu Konoue , Yukio Maeda , Tatsuya Mizuno , Hiroki Hashimoto , Mitsuru Ueda
IPC分类号： H01F5/00
CPC分类号： H01F5/00 , H01F17/0013 , H01F17/04
摘要： A highly reliable multilayer coil component is provided without forming voids between magnetic ceramic layers and internal conductor layers. According to the multilayer coil component, an internal stress problem is reduced, the direct current resistance is low, and fracture of internal conductors caused by the surge or the like is not likely to occur. An acidic solution is allowed to permeate a magnetic ceramic element from a side surface thereof through a side gap portion which is a region between side portions of the internal conductors and the side surface of the magnetic ceramic element and to reach interfaces between the internal conductors and a magnetic ceramic located therearound. A pore area ratio of the magnetic ceramic of the side gap portion which is located between the side portions of the internal conductors and the side surface of the magnetic ceramic element is set in the range of 6% to 28%.
摘要翻译：提供高度可靠的多层线圈部件，而不在磁陶瓷层和内部导体层之间形成空隙。根据多层线圈部件，内部应力问题减少，直流电阻低，不易发生由浪涌等引起的内部导线的断裂。允许酸性溶液从其侧表面穿过作为内部导体的侧部和磁性陶瓷元件的侧表面之间的区域的侧间隙部分渗透到磁性陶瓷元件，并且到达内部导体和位于其周围的磁性陶瓷。位于内部导体的侧部和磁性陶瓷元件的侧面之间的侧面间隙部分的磁性陶瓷的孔面积比设定在6％至28％的范围内。

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