| US 7,579,937 B2 | ||
| Laminated inductor and method of manufacture of same | ||
| Masazumi Arata, Tokyo (Japan); Kunihiko Kawasaki, Tokyo (Japan); Kunio Oda, Tokyo (Japan); Yohei Tadaki, Tokyo (Japan); Yoshimitsu Satoh, Tokyo (Japan); and Hitoshi Sasaki, Tokyo (Japan) | ||
| Assigned to TDK Corporation, Tokyo (Japan) | ||
| Filed on Oct. 14, 2008, as Appl. No. 12/250,926. | ||
| Claims priority of application No. 2007-290048 (JP), filed on Nov. 07, 2007; and application No. 2007-290052 (JP), filed on Nov. 07, 2007. | ||
| Prior Publication US 2009/0115563 A1, May 07, 2009 | ||
| Int. Cl. H01F 5/00 (2006.01) | ||
| U.S. Cl. 336—200 | 11 Claims |
| 1. A laminated inductor, comprising:
a laminate formed by laminating a plurality of insulator layers;
first and second external electrodes, positioned on outer surfaces of the laminate respectively;
a coil, formed by electrically connecting a plurality of strip-like conductor patterns, and arranged within the laminate;
a first leading conductor, electrically connected to one end of the coil, and electrically connected to the first external
electrode; and
a second leading conductor, electrically connected to the other end of the coil, and electrically connected to the second
external electrode, wherein
the conductor pattern has first and second broad faces, mutually opposing in a lamination direction of the laminate, and peripheral
side faces connecting the first and second broad faces over the entire perimeter of the first and second broad faces, and
is set to have a thickness of 20 μm or greater;
the peripheral side faces have concave portions extending along a peripheral direction and convex portions extending along
the peripheral direction, which are arranged in alternation along the lamination direction to form concavo-convex faces; and
by causing a portion of the laminate to enter into the concave portions of the peripheral side faces, the conductor pattern,
seen from the lamination direction, has overlapping portions, in which portions, of the laminate, which enter into the concave
portions in the peripheral side faces, overlap the conductor pattern, and non-overlapping portions, which are portions other
than the overlapping portions.
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