EMBEDDED COIL ASSEMBLY AND METHOD OF MAKING
First Claim
Patent Images
1. An embedded coil assembly comprising:
- an annular metal layer having an upper surface;
a first plurality of metal pillars arranged in an inner ring on the upper surface of the annular metal layer;
a second plurality of metal pillars arranged in an intermediate ring on the upper surface of the annular metal layer;
a third plurality of metal pillars arranged in an outer ring on the upper surface of the annular metal layer;
a ferrite ring positioned on the upper surface of the annular metal layer between the first plurality of metal pillars and the second plurality of metal pillars;
a plurality of conductive structures that each connect corresponding ones of said the first plurality of metal pillars and the second plurality of metal pillars; and
an encapsulation layer covering, the ferrite ring, the first and second plurality of metal pillars, at least a portion of the third plurality of metal pillars and at least a portion of the plurality of conductive structures.
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Abstract
An embedded coil assembly embodiment includes a ferrite ring having an annular axis. The ferrite ring is positioned on a conductive metal surface. A plurality of separate, spaced apart conductive structures extend over the ferrite ring and are attached to the conductive metal surface in a first region of the conductive surface positioned radially outwardly of the annular axis of the ferrite ring and in a second region of the conductive surface positioned radially inwardly of the annular axis of the ferrite ring. An encapsulation layer covers, the ferrite ring and at least a portion of the plurality of conductive structures.
13 Citations
30 Claims
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1. An embedded coil assembly comprising:
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an annular metal layer having an upper surface; a first plurality of metal pillars arranged in an inner ring on the upper surface of the annular metal layer; a second plurality of metal pillars arranged in an intermediate ring on the upper surface of the annular metal layer; a third plurality of metal pillars arranged in an outer ring on the upper surface of the annular metal layer; a ferrite ring positioned on the upper surface of the annular metal layer between the first plurality of metal pillars and the second plurality of metal pillars; a plurality of conductive structures that each connect corresponding ones of said the first plurality of metal pillars and the second plurality of metal pillars; and an encapsulation layer covering, the ferrite ring, the first and second plurality of metal pillars, at least a portion of the third plurality of metal pillars and at least a portion of the plurality of conductive structures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of making an embedded coil assembly comprising:
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providing a metal layer having a top surface and a bottom surface; and patterning and etching the metal layer so as to provide an annular metal layer divided into a plurality of separate circumferential sections. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An embedded coil assembly comprising:
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a ferrite ring having a an annular axis, said ferrite ring positioned on a conductive metal surface; a plurality of separate, spaced apart conductive structures attached to the conductive metal surface in a first region of the conductive surface positioned radially outwardly of the annular axis of the ferrite ring and in a second region of the conductive surface positioned radially inwardly of the annular axis of the ferrite ring; and an encapsulation layer covering, the ferrite ring and at least a portion of the plurality of conductive structures. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A method of making an embedded coil assembly comprising:
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placing a ferrite ring having a an annular axis on a conductive metal surface; forming a plurality of separate, spaced apart conductive structures that extend over the ferrite ring and that are attached to the conductive metal surface in a first region of the conductive surface positioned radially outwardly of the annular axis of the ferrite ring and in a second region of the conductive surface positioned radially inwardly of the annular axis of the ferrite ring; and encapsulating the ferrite ring and at least a portion of the plurality of conductive structures. - View Dependent Claims (29, 30)
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Specification