MULTILAYER COIL - MURATA MANUFACTURING CO

Title:

MULTILAYER COIL

Document Type and Number:

WIPO Patent Application WO/2007/040029

Kind Code:

A1

Abstract:

An open magnetic circuit type multilayer coil free from a structural defect such as interlayer separation or cracking. On both major surfaces of a nonmagnetic layer (13) are provided a layered body (10) where magnetic layers (11) are formed and a coil (L) where coil conductors (15, 16) that are formed on the layered body (10) and have a specified thickness are spirally interconnected. The coil conductor (16), out of the coil conductors (15, 16) formed in the layered body (10), located on the major surface of the nonmagnetic layer (13) has a small thickness that is not greater than 0.6 times those of the magnetic layer (11) and the nonmagnetic layer (13) but is greater than 0.1 times that of the coil conductor (15) not located on the major surface of the nonmagnetic layer (13).

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Inventors:

TSUZUKI KEIICHI (JP)

Application Number:

PCT/JP2006/318266

Publication Date:

April 12, 2007

Filing Date:

September 14, 2006

Export Citation:

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Assignee:

MURATA MANUFACTURING CO (JP)
TSUZUKI KEIICHI (JP)

International Classes:

H01F27/28; H01F17/00

Foreign References:

JPH1197256A	1999-04-09
JP2001217126A	2001-08-10

Attorney, Agent or Firm:

MORISHITA, Takekazu et al. (2-18 Minamihommachi 4-chome, Chuo-ku, Osaka-sh, Osaka 54, JP)

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