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 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 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.
14 Citations
19 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 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 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. An embedded coil assembly comprising:
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an annular metal layer having a first surface; a first plurality of metal pillars arranged in an inner ring on the first surface of the annular metal layer; a second plurality of metal pillars arranged in an intermediate ring on a first surface of an annular metal layer; a third plurality of metal pillars arranged in an outer ring on the first surface of the annular metal layer; a ferrite ring on the first surface of the annular metal layer between 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, and at least a portion of the third plurality of metal pillars. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An embedded coil assembly comprising:
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an annular metal layer having a first surface; a first plurality of metal pillars arranged in an inner ring on the first surface of the annular metal layer; a second plurality of metal pillars arranged in an intermediate ring on the first surface of an annular metal layer; a third plurality of metal pillars arranged in an outer ring on the first surface of the annular metal layer; a ferrite ring on the first surface of the annular metal layer between 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, and at least a portion of the third plurality of metal pillars, wherein portions of the annular metal layer is exposed from the encapsulation layer. - View Dependent Claims (17, 18, 19)
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Specification