Semiconductor structure with thin film resistor and terminal bond pad
First Claim
Patent Images
1. A semiconductor structure, comprising:
- a last wiring level including a terminal wire, two related wires, and another wire formed in a dielectric material layer;
at least one of a diffusion barrier layer and an isolation layer formed on the dielectric material layer;
a terminal bond pad formed on the terminal wire;
a thin film resistor formed on and conductively linking the two related wires;
a cap formed on the other wire;
a passivation layer formed over the terminal bond pad, the thin film resistor, and the cap; and
an opening formed in the passivation layer over the terminal bond pad,wherein the terminal bond pad, the thin film resistor, and the cap are composed of portions of a common layer of refractory metal.
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Abstract
Disclosed are methods for forming a thin film resistor and terminal bond pad simultaneously. A method includes simultaneously forming a terminal bond pad on a terminal wire and a thin film resistor on two other wires.
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Citations
19 Claims
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1. A semiconductor structure, comprising:
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a last wiring level including a terminal wire, two related wires, and another wire formed in a dielectric material layer; at least one of a diffusion barrier layer and an isolation layer formed on the dielectric material layer; a terminal bond pad formed on the terminal wire; a thin film resistor formed on and conductively linking the two related wires; a cap formed on the other wire; a passivation layer formed over the terminal bond pad, the thin film resistor, and the cap; and an opening formed in the passivation layer over the terminal bond pad, wherein the terminal bond pad, the thin film resistor, and the cap are composed of portions of a common layer of refractory metal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A semiconductor structure, comprising:
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an intermediate wiring level comprising a first wire; a barrier layer including at least one of a diffusion barrier layer and an isolation oxide layer formed over the intermediate wiring level; a cap formed on an upper surface of the first wire; a thin film resistor formed on the barrier layer; a next wiring level formed over the cap and the thin film resistor; a second wire formed in the next wiring level and in electrical contact with the cap; third and fourth wires formed in the next wiring level and in electrical contact with the thin film resistor, wherein the cap and the thin film resistor are composed of portions of a common layer of refractory metal. - View Dependent Claims (15, 16, 17)
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18. A semiconductor structure, comprising:
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an intermediate wiring level comprising a first wire; a barrier layer including at least one of a diffusion barrier layer and an isolation oxide layer formed over the intermediate wiring level; a cap formed on an upper surface of the first wire; a thin film resistor formed on the barrier layer; a next wiring level formed over the cap and the thin film resistor; a second wire formed in the next wiring level and in electrical contact with the cap; third and fourth wires formed in the next wiring level and in electrical contact with the thin film resistor, wherein the cap and the thin film resistor are composed of portions of a common layer of refractory metal, and the cap directly contacts the upper surface of the first wire.
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19. A semiconductor structure, comprising:
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a last wiring level including a terminal wire, two related wires. and another wire formed in a dielectric material layer; at least one of a diffusion barrier layer and an isolation layer formed on the dielectric material layer; a terminal bond pad formed on the terminal wire; a thin film resistor formed on and conductively linking the two related wires; a cap formed on the other wire; a passivation layer formed over the terminal bond pad, the thin film resistor, and the cap; and an opening formed in the passivation layer over the terminal bond pad, wherein the terminal bond pad, the thin film resistor, and the cap are composed of portions of a common layer of refractory metal, and the passivation layer is a different material than the at least one of the diffusion barrier layer and the isolation layer.
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Specification