Title:
電源ＩＣパッケージ
Document Type and Number:
Japanese Patent JP5661824
Kind Code:
B2
Abstract:
A planar magnetic device 1 including a first magnetic layer 3, a second magnetic layer 5, and a planar coil 4 disposed between the first magnetic layer 3 and the second magnetic layer 5, wherein magnetic particles 7 having a shape ratio S/L of 0.7 to 1 when a length of a long axis is L and a length of a short axis orthogonal to the long axis is L are filled in a gap W between coil wirings of the planar coil 4. According to the planar magnetic device 1, it is possible to realize a planar magnetic device such as an inductor reduced in height by using fine particles that enable to effectively obtain a large inductance value.
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Inventors:
井上 哲夫
佐藤 光
中川 勝利
佐藤 光
中川 勝利
Application Number:
JP2013024618A
Publication Date:
January 28, 2015
Filing Date:
February 12, 2013
Export Citation:
Assignee:
株式会社東芝
東芝マテリアル株式会社
東芝マテリアル株式会社
International Classes:
H01F17/00; H01F1/20; H01F17/04
Attorney, Agent or Firm:
Patent business corporation Tokyo international patent firm