Spiral inductor having parallel-branch structure

  • US 6,661,325 B2
  • Filed: 12/28/2001
  • Issued: 12/09/2003
  • Est. Priority Date: 08/22/2001
  • Status: Active Grant
First Claim
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1. A Spiral inductor comprising:

  • a plurality of upper metal lines spirally turning inward from the periphery to the center;

    a plurality of lower metal lines;

    an insulating layer interposed between the plurality of upper metal lines and the plurality of lower metal lines; and

    a via contact passing through the insulating layer, wherein the via contact connects the plurality of upper metal lines with the plurality of lower metal lines;

    wherein the plurality of lower metal lines include first lower metal lines crossing the plurality of upper metal lines and second lower metal lines overlapping with the plurality of upper metal lines, and the plurality of upper metal lines and the plurality of lower metal lines constructs an electric circuit in which the plurality of upper metal lines are connected to be parallel with the plurality of lower metal lines.

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