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公开(公告)号：US11366344B2
公开(公告)日：2022-06-21
申请号：US16651633
申请日：2018-09-28
Applicant: TDK Corporation
Inventor： Shinji Iwatsuka , Makoto Endo , Kenji Sasaki
Abstract: An optical modulator includes: a substrate; a waveguide layer including first and second optical waveguides formed of an electro-optic material film on the substrate to have a ridge shape and to be disposed adjacent to each other; an RF part that applies a modulated signal to the optical waveguides; and a DC part that applies a DC bias to the optical waveguides. The DC part includes: a buffer layer covering at least upper surfaces of the optical waveguides; a first bias electrode opposed to the first optical waveguide through the buffer layer; and a second bias electrode provided adjacent to the first bias electrode. A first DC bias voltage is applied between the first and second bias electrodes. A waveguide layer removal area in which at least part of the waveguide layer is removed is provided at least under an area between the first and second bias electrodes.
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公开(公告)号：US20220076871A1
公开(公告)日：2022-03-10
申请号：US17531075
申请日：2021-11-19
Applicant: TDK CORPORATION
Inventor： Makoto Endo , Mitsunori Hiraoka , Kazuhiko Ito
IPC: H01F27/255 , H01F27/28 , H01F27/29 , H01F5/00 , H01F41/04
Abstract: There is provided a coil component including a coil portion that has at least one layer of planar coil including a coil-wound portion and an insulative layer which covers the periphery of the coil-wound portion, a covering portion that covers the coil portion and is constituted of a mixture including magnetic fillers and resin, and a conductor post that is penetratingly provided inside the covering portion and extends from the coil-wound portion to an upper surface of the covering portion along an axial direction of the planar coil. The conductor post has a post portion which extends from the coil-wound portion in the axial direction of the planar coil, and a lid portion which is exposed from the covering portion and extends from an end portion of the post portion on the upper surface side along a surface direction of the upper surface.
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公开(公告)号：US11087915B2
公开(公告)日：2021-08-10
申请号：US16100607
申请日：2018-08-10
Applicant: TDK CORPORATION
Inventor： Masahiro Nakajima , Kenichi Hirenzaki , Makoto Endo , Masanori Suzuki , Tomonaga Nishikawa
Abstract: Disclosed herein is an electronic component that includes: a base having a main surface; a passive element part formed on the main surface of the base; a magnetic resin layer formed on the main surface of the base so as to embed the passive element part therein, the magnetic resin layer having a surface extending substantially parallel to the main surface of the base; an insulating coat layer formed on a first area of the surface of the magnetic resin layer, the insulating coat layer having higher smoothness than the surface of the magnetic resin layer; and a terminal electrode formed on a second area of the surface of the magnetic resin layer and electrically connected to the passive element part.
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公开(公告)号：US10090106B2
公开(公告)日：2018-10-02
申请号：US15009250
申请日：2016-01-28
Applicant: TDK Corporation
Inventor： Makoto Endo , Keisuke Ishida , Koichi Yamaguchi , Shimpei Tanabe
Abstract: A laminated ceramic electronic component with a cuboid-shaped element main body having a first main face and a second main face elongating along the length direction and the width direction, a first side face and a second side face elongating along the length direction and the height direction, and a first end face and a second end face elongating along the width direction and the height direction; and a pair of internal electrode layers opposite to each other in the height direction inside the element main body with a dielectric layer interposed therebetween in such a manner that they are exposed at the first end face or the second end face, wherein the thickness of the dielectric layer becomes larger from central portion to the first side face and the second side face.
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公开(公告)号：US09865397B2
公开(公告)日：2018-01-09
申请号：US15264939
申请日：2016-09-14
Applicant: TDK CORPORATION
Inventor： Hirobumi Tanaka , Yohei Noda , Keisuke Okai , Makoto Endo
CPC classification number: H01G4/30 , H01G4/12 , H01G4/224 , H01G4/232 , H01G4/2325
Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. A main component of the insulating layer is constituted by glass containing Si at 25 wt % or more. The external electrode includes glass containing at least Si. The external electrode covers an end portion in the second axial direction of the insulating layer. A diffusing layer is partially present at least at a bonding portion of the insulating layer with the external electrode in the side surface.
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Patent Agency Ranking
公开(公告)号：US09607767B2
公开(公告)日：2017-03-28
申请号：US14462244
申请日：2014-08-18
Applicant: TDK CORPORATION
Inventor： Makoto Endo , Koichi Yamaguchi , Keisuke Ishida
CPC classification number: H01G4/1227 , H01C7/003 , H01C7/008 , H01C7/1006 , H01C7/18 , H01G4/30
Abstract: A laminate-type ceramic electric component such as laminated ceramic capacitor which has excellent mechanical strength and also has thermal shock resistance at the same time is provided. A laminate-type ceramic electronic component includes an inner layer part, in which dielectric layers including ABO3 (which represents a perovskite crystal in which A contains at least Ba and B contains at least Ti) as a main component and internal electrode layers are alternately laminated; and a pair of outer layer parts which sandwich the inner layer part, wherein the outer layer parts include a continuous film containing a Ba—Si—Ti—O based crystal phase.
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公开(公告)号：US11854730B2
公开(公告)日：2023-12-26
申请号：US17531075
申请日：2021-11-19
Applicant: TDK CORPORATION
Inventor： Makoto Endo , Mitsunori Hiraoka , Kazuhiko Ito
IPC: H01F5/00 , H01F27/255 , H01F27/28 , H01F27/29 , H01F41/04
CPC classification number: H01F27/255 , H01F5/003 , H01F27/2804 , H01F27/292 , H01F41/046
Abstract: There is provided a coil component including a coil portion that has at least one layer of planar coil including a coil-wound portion and an insulative layer which covers the periphery of the coil-wound portion, a covering portion that covers the coil portion and is constituted of a mixture including magnetic fillers and resin, and a conductor post that is penetratingly provided inside the covering portion and extends from the coil-wound portion to an upper surface of the covering portion along an axial direction of the planar coil. The conductor post has a post portion which extends from the coil-wound portion in the axial direction of the planar coil, and a lid portion which is exposed from the covering portion and extends from an end portion of the post portion on the upper surface side along a surface direction of the upper surface.
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公开(公告)号：US09077059B2
公开(公告)日：2015-07-07
申请号：US14031655
申请日：2013-09-19
Applicant: TDK CORPORATION
Inventor： Makoto Endo
CPC classification number: H01P5/10 , H03H7/422 , H03H2001/0078
Abstract: A thin film balun that can be made smaller and thinner while maintaining required balun characteristics is provided. A thin film balun 1 includes: an unbalanced transmission line UL including a first coil portion C1 and a second coil portion C2; a balanced transmission line BL including a third coil portion C3 and a fourth coil portion C4 that are positioned facing and magnetically coupled to the first coil portion C1 and the second coil portion C2 respectively; an unbalanced terminal UT connected to the first coil portion C1; a ground terminal G connected to the second coil portion C2 via a C component D; and an electrode D2 connected to the ground terminal G and facing a part of the second coil portion C2. The C component D is formed by the electrode D2 and the part D1 of the second coil portion C2.
Abstract translation: 提供了一种薄膜平衡 - 不平衡转换器，可以制造更小更薄，同时保持所需的平衡 - 不平衡变压器特 薄膜平衡 - 不平衡转换器1包括：包括第一线圈部分C1和第二线圈部分C2的不平衡传输线路UL; 平行传输线BL，其包括分别面对并磁耦合到第一线圈部分C1和第二线圈部分C2的第三线圈部分C3和第四线圈部分C4; 连接到第一线圈部分C1的不平衡端子UT; 接地端子G，经由C部件D与第二线圈部C2连接; 以及连接到接地端子G并面向第二线圈部分C2的一部分的电极D2。 C分量D由第二线圈部分C2的电极D2和部分D1形成。
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公开(公告)号：US10199168B2
公开(公告)日：2019-02-05
申请号：US15003216
申请日：2016-01-21
Applicant: TDK CORPORATION
Inventor： Koichi Yamaguchi , Keisuke Ishida , Makoto Endo , Shimpei Tanabe
Abstract: A laminated ceramic electronic component provided with a component main body formed by alternatively laminating multiple dielectric ceramic layers and multiple internal electrode layers, and external electrodes disposed on the end faces where the internal electrode layers of the component main body are exposed, wherein at least a part of the multiple internal electrode layers exposed on the end faces of the component main body are provided with end-face electrode portions that connect the adjacent internal electrode layers, the connecting portions are present between the end-face electrode portions and the dielectric ceramic layers that contact with the end-face electrode portions, and the external electrodes are disposed so that the end-face electrode portions are covered.
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公开(公告)号：US09978521B2
公开(公告)日：2018-05-22
申请号：US15265268
申请日：2016-09-14
Applicant: TDK CORPORATION
Inventor： Keisuke Okai , Makoto Endo , Hiroshi Shindo , Yui Sugiura , Tomomichi Gunji , Yohei Noda , Hirobumi Tanaka
Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These layers are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. A pair of side surfaces facing each other in the first axis direction of the element body is respectively equipped with an insulating layer. A pair of end surfaces facing each other in the second axis direction of the element body is respectively equipped with an external electrode electrically connected to the internal electrode layer. The insulating layer has a mountain portion formed on a peripheral edge of the side surface and a plane portion of a central portion of the side surface.
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