Integrated circuit having direction dependent wiring
First Claim
1. An integrated circuit product comprising:
- a plurality of connection points;
at least one layer comprising routing wires connecting said connection points;
a first set of routing wires in said layer connecting along a first direction;
a second set of routing wires in said layer connecting along a second direction, said second direction being orthogonal to said first direction; and
said first set of routing wires having wire width values substantially different from the wire width values of said second set of routing wires.
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Accused Products
Abstract
In accordance with the present method and system for improving integrated circuit layout, a local process modification is calculated from simulated process response variables at a set of control points. Said modification values are incorporated into the layout constraints imposed by design rules and design intent to account for manufacturing friendliness. Solving the updated constraint equation with user specified objective function produces a new layout with increased manufacturability. The new layout may further contain data tags that enable optimal process correction to be performed on selected locations, leading to reduction in data size and mask complexity. Also in accordance with this invention, physical design tools are enhanced to read and process anisotropic design rules.
55 Citations
20 Claims
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1. An integrated circuit product comprising:
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a plurality of connection points; at least one layer comprising routing wires connecting said connection points; a first set of routing wires in said layer connecting along a first direction; a second set of routing wires in said layer connecting along a second direction, said second direction being orthogonal to said first direction; and said first set of routing wires having wire width values substantially different from the wire width values of said second set of routing wires. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An integrated circuit product comprising:
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a chip area comprising a plurality of vias; at least one metal layer comprising metal wires connecting said vias; a first set of said metal wires connecting along a first direction; a second set of said metal wires connecting along a second direction, said second direction being orthogonal to said first direction; and said first set of said metal wires having substantially different wire width from said second set of said metal wires. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An integrated circuit product prepared by a process comprising the steps of:
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providing a plurality of connection points; providing at least one metal layer comprising routing wires; loading a first wire width constraint for a first set of routing wires oriented along a first direction in said metal layer; loading a substantially different second wire width constraint for a second set of routing wires oriented along a second direction in said metal layer, said second direction being orthogonal to said first direction; and functionally connecting said connection points using said first set of routing wires along said first direction, and using said second set of routing wires along said second direction. - View Dependent Claims (20)
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Specification