Inductor device having improved quality factor
First Claim
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1. An inductor device, comprising:
- a first coil conductor located over a substrate and having a first conductivity and a first pattern; and
a second coil conductor located on a substantial portion of said first coil conductor, having a second conductivity substantially greater than said first conductivity, and having a second pattern substantially conforming to said first pattern.
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Abstract
An inductor device including a first coil conductor (310) and a second coil conductor (510), the first coil conductor (310) being located over a substrate (120) and having a first pattern and a first conductivity, and the second coil conductor (510) being located on a substantial portion of the first coil conductor (310), having a second pattern substantially conforming to the first pattern, and having a second conductivity substantially greater than the first conductivity.
35 Citations
31 Claims
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1. An inductor device, comprising:
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a first coil conductor located over a substrate and having a first conductivity and a first pattern; and
a second coil conductor located on a substantial portion of said first coil conductor, having a second conductivity substantially greater than said first conductivity, and having a second pattern substantially conforming to said first pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of manufacturing an inductor device, comprising:
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forming a first coil conductor over a substrate, said first coil conductor having a first conductivity and a first pattern; and
forming a second coil conductor on a substantial portion of said first coil conductor, said second coil conductor having a second conductivity substantially greater than said first conductivity and having a second pattern substantially conforming to said first pattern. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An integrated circuit device, comprising:
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a substrate;
an inductor device, including a first coil conductor located over said substrate and having a first conductivity and a first pattern, and a second coil conductor located on a substantial portion of said first coil conductor, having a second conductivity substantially greater than said first conductivity, and having a second pattern substantially conforming to said first pattern;
an active device located in said substrate; and
interconnects coupling said active device and said inductor device. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An inductor device comprising:
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a substrate;
a first metal layer comprising a first conductor formed in a closed pattern on said substrate, and a first metal interconnect feature on said substrate;
a first dielectric formed atop said first conductor;
a first coil conductor formed on said first dielectric layer in a closed pattern substantially overlying said first conductor and being in electrical contact with said first conductor;
a passivation layer formed atop said first coil conductor; and
a second coil conductor formed on said passivation layer in a closed pattern substantially overlying said first coil conductor and being in electrical contact with said first coil conductor.
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Specification