Packaged spiral inductor structures, processes of making...

Inductor devices – Windings – Having conductor of particular shape

Reexamination Certificate

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C438S238000, C438S623000, C438S706000

Reexamination Certificate

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07852189

ABSTRACT:
A spiral inductor is disposed above a substrate that includes two different materials. A dielectric film is the first material that provides structural integrity for the substrate. A second dielectric is the second material that provides a low dielectric-constant (low-K) material closest to the spiral inductor coil. A process of forming the spiral inductor includes patterning the substrate to allow a recess as a receptacle for the second dielectric, followed by forming the spiral inductor mostly above the second dielectric.

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