Patent ID: 7309920

Claim:
A chip, comprising: a silicon substrate; a first transistor in or on said silicon substrate; a second transistor in or on said silicon substrate; a first interconnecting structure over said silicon substrate, wherein said first interconnecting structure comprises a first portion and a second portion over said first portion, wherein said first portion is connected to said second portion; a second interconnecting structure over said silicon substrate, wherein said second interconnecting structure comprises a third portion and a fourth portion over said third portion, wherein said third portion is connected to said fourth portion, wherein said first interconnecting structure is separate from said second interconnecting structure, wherein said first and third portions are provided by a first metal layer, and said second and fourth portions are provided by a second metal layer over said first metal layer; an insulating layer between said first and second metal layers; a passivation layer over said first and second interconnecting structures and over said insulating layer, wherein said passivation layer comprises a topmost nitride layer of said chip, wherein a first opening in said passivation layer exposes a first pad of said first interconnecting structure, and a second opening in said passivation layer exposes a second pad of said second interconnecting structure, wherein said first opening has a width between 0.5 and 20 micrometers; and a third interconnecting structure over said passivation layer and over said first and second pads, wherein said first transistor is connected to said second transistor through, in sequence, said first interconnecting structure, said first opening, said third interconnecting structure, said second opening and said second interconnecting structure, wherein said third interconnecting structure comprises a metal line having a thickness greater than 1 micrometer and greater than those of said first and second metal layers, and having a width greater than 1 micrometer.