Coil device
First Claim
1. A coil device comprising:
- a first coil pattern;
a second coil pattern disposed above the first coil pattern and spaced apart from the first coil pattern;
an insulating layer covering the first coil pattern and the second coil pattern, the insulating layer defining an opening surrounded by the first coil pattern and the second coil pattern;
a magnetic covering element covering the insulating layer and extending into the opening; and
a plurality of conductive pillars disposed within the magnetic covering element, wherein sidewalls of the conductive pillars are entirely covered by the magnetic covering element and at least an end of each of the conductive pillars is exposed from a bottom side of the magnetic covering element, a portion of the conductive pillars are electrically connected to the first coil pattern and another portion of the conductive pillars are electrically connected to the second coil pattern.
1 Assignment
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Accused Products
Abstract
A coil device includes a first coil pattern, a second coil pattern, an insulating layer, a magnetic covering element and a number of conductive pillars. The second coil pattern is disposed above the first coil pattern, and is spaced apart from the first coil pattern. The insulating layer covers the first coil pattern and the second coil pattern and defines an opening surrounded by the first coil pattern and the second coil pattern. The magnetic covering element covers the insulating layer and extends into the opening. The conductive pillars are disposed within the magnetic covering element and are exposed from a bottom side of the magnetic covering element. A portion of the conductive pillars are electrically connected to the first coil pattern, and another portion of the conductive pillars are connected to the second coil pattern. The coil device can be easily manufactured.
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Citations
21 Claims
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1. A coil device comprising:
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a first coil pattern; a second coil pattern disposed above the first coil pattern and spaced apart from the first coil pattern; an insulating layer covering the first coil pattern and the second coil pattern, the insulating layer defining an opening surrounded by the first coil pattern and the second coil pattern; a magnetic covering element covering the insulating layer and extending into the opening; and a plurality of conductive pillars disposed within the magnetic covering element, wherein sidewalls of the conductive pillars are entirely covered by the magnetic covering element and at least an end of each of the conductive pillars is exposed from a bottom side of the magnetic covering element, a portion of the conductive pillars are electrically connected to the first coil pattern and another portion of the conductive pillars are electrically connected to the second coil pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A coil device comprising:
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an insulating layer; a plurality of coil patterns stacked in the insulating layer, and the coil patterns being spaced apart from each other by the insulating layer; a magnetic covering element covering the insulating layer; and a plurality of conductive pillars disposed within the magnetic covering element and electrically connected to the corresponding coil patterns, wherein sidewalls of the conductive pillars are entirely covered by the magnetic covering element and at least an end of each of the conductive pillars is exposed from a bottom side of the magnetic covering element. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A coil device comprising:
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an insulating layer formed in a ring shape; a plurality of coil patterns stacked in the insulating layer, and the coil patterns being spaced apart from each other by the insulating layer; a magnetic covering element consisting of a magnetic substrate and a magnetic cover, the magnetic substrate comprising a carrying side and a bottom side opposite to the carrying side, the insulating layer being disposed at the carrying side and in contact with the carrying side, the magnetic cover entirely covering the carrying side and the insulating layer, and the insulating layer being entirely covered by the magnetic covering element; a plurality of conductive pillars disposed within the magnetic substrate and electrically connected to the corresponding coil patterns, and sidewalls of the conductive pillars being entirely covered by the magnetic covering element and at least an end of each of the conductive pillars being exposed from a bottom side of the magnetic substrate; a plurality of conductive wires disposed within the magnetic covering element, and the coil patterns being electrically connected to the corresponding conductive pillars via the conductive wires; and a plurality of electrodes disposed at the bottom side of the magnetic substrate and the electrodes being electrically connected to the conductive pillars, respectively. - View Dependent Claims (21)
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Specification