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Patent Searching and Data


Title:
FERRITE SUBSTRATE MODULE
Document Type and Number:
WIPO Patent Application WO/2018/088219
Kind Code:
A1
Abstract:
Provided is a small-size ferrite substrate module which has excellent coil characteristics and excellent electrical characteristics including ground characteristics. According to the present invention, a ferrite substrate (20) comprises: magnetic layers (21, 22); and a non-magnetic layer (24) and a non-magnetic layer (25), which are arranged so as to sandwich the magnetic layers (21, 22). A surface of the non-magnetic layer (25), which is on the reverse side of the magnetic layer (22)-side surface, serves as a second main surface (203) of the ferrite substrate (20). The non-magnetic layer (25) is provided with a first recess (211), a second recess (212) and a wiring conductor (421). The first recess (211) opens to the second main surface (203) and a first lateral surface (201), and has an inner wall surface (221) that is not linear when viewed in plan. The wiring conductor (421) is exposed from the inner wall surface (221) of the first recess (211). An outer surface conductor (60) is formed on the inner wall surface (221) of the first recess (211), and is connected to the wiring conductor (421).

Inventors:
NANJO JYUNICHI (JP)
MAKINO NARIMICHI (JP)
Application Number:
PCT/JP2017/038603
Publication Date:
May 17, 2018
Filing Date:
October 26, 2017
Export Citation:
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Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01L23/12; H01F27/00; H01F27/29; H01L23/00; H05K1/16; H05K3/00
Domestic Patent References:
WO2012140805A12012-10-18
WO2014030471A12014-02-27
WO2016121491A12016-08-04
Foreign References:
JP2008258553A2008-10-23
JP2010212410A2010-09-24
JP2012256842A2012-12-27
JP2015115552A2015-06-22
JP2011258920A2011-12-22
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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