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Title:
LAMINATED TOROIDAL COIL AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/047486
Kind Code:
A1
Abstract:
A laminated toroidal coil (101) is provided with: a magnetic material substrate (11) having a first main surface (S1) and a second main surface (S2); a non-magnetic material substrate (a first non-magnetic material substrate (12) or the like); a laminated body (1) having a third main surface (S3) and a fourth main surface (S4); external electrodes (P1, P2); and a coil (CL). The laminated body (1) is formed by laminating the magnetic material substrate (11) and the non-magnetic material substrate, and a through hole (CP) penetrating the third main surface (S3) and the fourth main surface (S4) is provided in the laminated body (1). The external electrodes (P1, P2) are formed on the first non-magnetic material substrate (12) that is disposed on the third main surface (S3). The coil (CL) is formed by connecting: a first conductor pattern (21) formed on the first main surface (S1); a second conductor pattern formed on the second main surface (S2); an outer peripheral-side end surface conductor (41) formed on the outer peripheral-side end surface of the magnetic material substrate (11); and an inner peripheral-side end surface conductor (42) formed on the inner peripheral-side end surface of the magnetic material substrate (11), said inner peripheral-side end surface being on the through hole (CP) side.

Inventors:
NANJO Jyunichi (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
MATSUBARA Daigo (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
MAEDA Yukio (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/026758
Publication Date:
March 15, 2018
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H01F17/00; H01F17/06; H01F27/00; H01F27/29; H01F41/04
Foreign References:
JPH10308314A1998-11-17
JPH07220948A1995-08-18
JPH0696940A1994-04-08
JPS62149807U1987-09-22
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (1-4-34, Noninbashi Chuo-ku, Osaka-sh, Osaka 11, 〒5400011, JP)
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