MAGNETIC PARTICLE-CONTAINING FILM, LAMINATE, AND ELECTRONIC COMPONENT

WIPO Patent Application WO/2021/117395

A1

The present invention addresses the problem of providing a magnetic particle-containing film having excellent magnetic permeability. The present invention also addresses the problem of providing a laminate including the magnetic particle-containing film, and an electronic component including the laminate. This magnetic particle-containing film includes magnetic particles and a resin. When, in a cross-section obtained by cutting the magnetic particle-containing film along the thickness direction of the magnetic particle-containing film, a depth position corresponding to 1/50 of the thickness of the magnetic particle-containing film from one surface to the other surface of the magnetic particle-containing film is denoted as Da, and a depth position corresponding to 1/50 of the thickness of the magnetic particle-containing film from the other surface to the one surface of the magnetic article-containing film is denoted as Db, an area rate Md50 of magnetic particles in a region from the one surface to Da is greater than an area rate Mu50 of magnetic particles in a region from the other surface to Db, and the ratio of Mu50 to Md50 is less than 0.9.

MIYATA TETSUSHI (JP)
ISHIKAWA TATSUO (JP)
MIKAMI TATSUO (JP)

PCT/JP2020/041703

June 17, 2021

November 09, 2020

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FUJIFILM CORP (JP)

H01F17/04; H01F1/26; H01F1/37; H01Q7/06

WO2020022393A1

2020-01-30

JP2019003988A	2019-01-10
JP2009027145A	2009-02-05
JPH0334118A	1991-02-14

ITOH Hideaki et al. (JP)

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