Title:
コイル部品
Document Type and Number:
Japanese Patent JP3615024
Kind Code:
B2
Abstract:
A coil element includes a composite member (7) located on a first magnetic substrate (3), a second magnetic substrate (10) disposed on the composite member (7) and an adhesive layer (8) located therebetween. The composite member (7) includes coil patterns (4, 5) and insulating layers (6a, 6b, 6c). The adhesive layer (8) is composed of a material having a relative magnetic permeability of more than about 1.0. Alternatively, the insulating layers (6a, 6b, 6c), excluding a portion which surrounds an overlapping region of coil patterns (4, 5), are composed of a material having a relative magnetic permeability of more than about 1.0. Alternatively, the insulating layers (6a, 6b, 6c) are provided with holes (16) in the approximate central regions of the insulating layers surrounded by the coil patterns (4, 5), and the holes (16) are filled with the material of the adhesive layer (8).
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Inventors:
Eiichi Kitamura
Application Number:
JP22189297A
Publication Date:
January 26, 2005
Filing Date:
August 04, 1997
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01F1/34; H01F17/00; H01F17/04; H01F19/00; (IPC1-7): H01F17/00; H01F1/34; H01F17/04; H01F19/00
Domestic Patent References:
| JP9182432A | ||||
| JP8213261A | ||||
| JP714716A | ||||
| JP817617A | ||||
| JP6215949A |
Attorney, Agent or Firm:
Kiyoshi Igarashi