Inductor formed in an integrated circuit
First Claim
1. An integrated circuit comprising an inductor formed therein, the integrated circuit comprising:
- a substrate;
a plurality of material layers overlying the substrate;
a spiral shaped continuous conductive line disposed in a first metallization layer; and
a spiral shaped continuous conductive runner disposed in a second metallization layer above the first metallization layer and in substantially vertical alignment and physical contact with the conductive line for substantially an entire length of the conductive runner and the conductive line, wherein the conductive line and the conductive runner cooperate to produce an inductive effect.
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Accused Products
Abstract
An inductor formed within an integrated circuit and a method for forming the inductor. The inductor comprises an underlying layer of aluminum formed in a first metallization layer and patterned and etched into the desired shape. In one embodiment the aluminum line comprises a spiral shape. According to a damascene process, a conductive runner, preferably of copper, is formed in a dielectric layer overlying the aluminum line and in electrical contact therewith. The aluminum line and the conductive runner cooperate to form the inductor. In another embodiment the aluminum line and the conductive runner are formed in a vertically spaced-apart orientation, with tungsten plugs or conductive vias formed to provide electrical connection therebetween. A method for forming the inductor comprises forming an aluminum conductive line and forming a conductive runner over the conductive line.
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Citations
18 Claims
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1. An integrated circuit comprising an inductor formed therein, the integrated circuit comprising:
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a substrate; a plurality of material layers overlying the substrate; a spiral shaped continuous conductive line disposed in a first metallization layer; and a spiral shaped continuous conductive runner disposed in a second metallization layer above the first metallization layer and in substantially vertical alignment and physical contact with the conductive line for substantially an entire length of the conductive runner and the conductive line, wherein the conductive line and the conductive runner cooperate to produce an inductive effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An integrated circuit comprising:
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a semiconductor substrate comprising active regions therein; a plurality of dielectric layers overlying the substrate; a plurality of metallization layers alternating with the plurality of dielectric layers wherein a first one of the plurality of metallization layers comprises a spiral shaped continuous conductive line; and a spiral shaped continuous conductive runner formed in a second one of the plurality of metallization layers, wherein the conductive runner is in conductive communication with the conductive line, and wherein the conductive runner and the conductive line cooperate to produce an inductive effect. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification