Coil component and method of manufacturing the same
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United States of America Patent
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May 28, 2013
Grant Date -
Dec 1, 2011
app pub date -
May 31, 2011
filing date -
May 31, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A coil component is provided with a magnetic substrate made of magnetic ceramic material, a thin-film coil layer containing a coil conductor formed on one principal surface of the magnetic substrate, a plurality of bump electrodes formed on the principal surface of the thin-film coil layer, and an insulating resin layer formed on the principal surface of the thin-film coil layer excluding formation positions of the bump electrodes. Each bump electrode has an exposure surface on a bottom surface and on two side surfaces of a layered product composed of the magnetic substrate, the thin-film coil layer and the insulating resin layer. A corner of the each bump electrode has a notch portion. The insulating resin layer includes a center resin portion provided in a center of the principal surface of the thin-film coil layer and a plurality of corner resin portions provided in the notch portion of each bump electrode.
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