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Patent Searching and Data


Title:
LC FILTER AND METHOD FOR PRODUCING LC FILTER
Document Type and Number:
WIPO Patent Application WO/2018/030134
Kind Code:
A1
Abstract:
The present invention enables the achievement of an LC filter that has high planarity in the front surface and in the back surface, while enabling the achievement of desired characteristics. An LC filter (200) according to the present invention is provided with: a laminate (210); coil conductor patterns (222, 223); a thin film capacitor (100); and input/output terminal conductors (241, 242, 243). The laminate (210) is obtained by laminating a plurality of resin sheets (211, 212, 213, 214). The coil conductor pattern (222) is at least partially embedded in the resin sheet (212). The thin film capacitor (100) is at least partially embedded in the resin sheet (212) and is arranged within the coil opening of the coil conductor pattern (222) having a spiral shape, while being connected to the coil conductor pattern (223). The thicknesses of the coil conductor patterns (222, 223) are smaller than the thicknesses of the resin sheets (212, 213); and the thickness of the thin film capacitor (100) is smaller than the thicknesses of the resin sheets (212, 213).

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Inventors:
NAKAISO Toshiyuki (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/026757
Publication Date:
February 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:
H01F27/00; H01F17/00; H01F41/04; H01G4/33; H01G4/40; H03H7/01
Foreign References:
JP2007142109A2007-06-07
JP2008172075A2008-07-24
JP2004304178A2004-10-28
JP3093578U2003-05-16
JP2002111222A2002-04-12
JPH07307440A1995-11-21
JPH0955583A1997-02-25
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (1-4-34, Noninbashi Chuo-ku, Osaka-sh, Osaka 11, 〒5400011, JP)
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