Method and apparatus for local preferred direction routing

Details Method and apparatus for local preferred direction routing Method and apparatus for local preferred direction routing

2004-12-06

2008-03-04

Garbowski, Leigh M. (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

Reexamination Certificate

active

07340711

ABSTRACT:
Some embodiments of the invention provide a method for defining routes in a design layout. The method defines at least one particular wiring layer that has at least two regions with different local preferred wiring directions. The method then uses the differing local preferred wiring directions to define a detailed route on the wiring layer. In some embodiments, the method defines a first route that traverse first and second regions between two layers by using a first via that has a first pad in the second region. The method also defines a second route that traverses the second region and a third region in the two layers by using a second via that has a second pad in the second region, where the first and second pads have different shapes.

REFERENCES:
patent: 4571451 (1986-02-01), Linsker et al.
patent: 4615011 (1986-09-01), Linsker
patent: 4777606 (1988-10-01), Fournier
patent: 4855253 (1989-08-01), Weber
patent: 4855929 (1989-08-01), Nakajima
patent: 4910680 (1990-03-01), Hiwatashi
patent: 5375069 (1994-12-01), Satoh et al.
patent: 5541005 (1996-07-01), Bezama et al.
patent: 5635736 (1997-06-01), Funaki et al.
patent: 5650653 (1997-07-01), Rostoker et al.
patent: 5673201 (1997-09-01), Malm et al.
patent: 5723908 (1998-03-01), Fuchida et al.
patent: 5798936 (1998-08-01), Cheng
patent: 5801385 (1998-09-01), Endo et al.
patent: 5801960 (1998-09-01), Takano et al.
patent: 5811863 (1998-09-01), Rostoker et al.
patent: 5814847 (1998-09-01), Shihadeh et al.
patent: 5980093 (1999-11-01), Jones et al.
patent: 6262487 (2001-07-01), Igarashi et al.
patent: 6263475 (2001-07-01), Toyonaga et al.
patent: 6324674 (2001-11-01), Andreev et al.
patent: 6407434 (2002-06-01), Rostoker et al.
patent: 6441470 (2002-08-01), Shenoy
patent: 6448591 (2002-09-01), Juengling
patent: 6526555 (2003-02-01), Teig et al.
patent: 6711727 (2004-03-01), Teig et al.
patent: 6769105 (2004-07-01), Teig et al.
patent: 6772406 (2004-08-01), Trimberger
patent: 6792587 (2004-09-01), Xing et al.
patent: 6858928 (2005-02-01), Teig et al.
patent: 6870255 (2005-03-01), Teig et al.
patent: 6889371 (2005-05-01), Teig et al.
patent: 6889372 (2005-05-01), Teig et al.
patent: 6898773 (2005-05-01), Teig et al.
patent: 6915500 (2005-07-01), Teig et al.
patent: 6973634 (2005-12-01), Teig et al.
patent: 6988258 (2006-01-01), Tan et al.
patent: 6996789 (2006-02-01), Teig et al.
patent: 7003748 (2006-02-01), Hsu
patent: 7003752 (2006-02-01), Teig et al.
patent: 7010771 (2006-03-01), Teig et al.
patent: 7013445 (2006-03-01), Teig et al.
patent: 7036101 (2006-04-01), He et al.
patent: 7036105 (2006-04-01), Teig et al.
patent: 7047513 (2006-05-01), Teig et al.
patent: 7062743 (2006-06-01), Kahng et al.
patent: 7080342 (2006-07-01), Teig et al.
patent: 7086024 (2006-08-01), Hsu et al.
patent: 7096449 (2006-08-01), Teig et al.
patent: 7117468 (2006-10-01), Teig et al.
patent: 7171635 (2007-01-01), Teig et al.
patent: 7174529 (2007-02-01), Hetzel
patent: 7185304 (2007-02-01), Suto et al.
patent: 7197738 (2007-03-01), Hetzel et al.
patent: 2001/0039643 (2001-11-01), Kuroda et al.
patent: 2003/0084416 (2003-05-01), Dai et al.
patent: 2004/0098696 (2004-05-01), Teig et al.
patent: 2004/0098697 (2004-05-01), Frankle et al.
patent: 2004/0243960 (2004-12-01), Hsu et al.
patent: 2005/0229134 (2005-10-01), Hetzel et al.
patent: 2005/0240894 (2005-10-01), Teig
patent: 2005/0273746 (2005-12-01), Malhotra et al.
patent: 2005/0273747 (2005-12-01), Malhotra et al.
patent: 04000677 (1992-01-01), None
Cheng-Kok Koh and Patrick H. Madden, Manhattan or Non Manhattan? A Study of Alternative VLSI routing Architectures, 2000, pp. 47-52.
U.S. Appl. No. 11/005,316, Asmus Hetzel, et al., filed Dec. 6, 2004.
U.S. Appl. No. 11/005,169, Anish Malhotra, et al., filed Dec. 6, 2004.
U.S. Appl. No. 11/005,162, Anish Malhotra, et al., filed Dec. 6, 2004.
International Search Report, Cadence Design Systems, Inc., Feb. 15, 2006, International Search Report of PCT Application based on U.S. Appl. No. 11/005,448, which is this application.
Written Opinion of the International Searching Authority, Cadence Design Systems, Inc., Feb. 15, 2006, Written Opinion of the International Searching Authority of PCT Application based on U.S. Appl. No. 11/005,448, which is this application.
U.S. Appl. No. 09/733,104 (Non Final Office Action), Teig, filed Dec. 7, 2000, Non-Final Office Action mailed Oct. 27, 2003 of related application.
U.S. Appl. No. 09/733,104 (Final Office Action), Teig, filed Dec. 7, 2000, Final Office Action mailed Sep. 26, 2002 of related application.
U.S. Appl. No. 09/733,104 (Non-Final Office Action), Teig, filed Dec. 7, 2000, Non-Final Office Action mailed Jan. 3, 2002 of related application.
U.S. Appl. No. 11/005,162 (Non-Final Office Action), Malhotra, filed Dec. 6, 2004, Non-Final Office Action mailed Jun. 12, 2007 of related application.
U.S. Appl. No. 11/005,169 (Non-Final Office Action), Malhotra, filed Dec. 6, 2004, Non-Final Office Action mailed Jan. 18, 2007 of related application.
U.S. Appl. No. 11/005,316 (Non-Final Office Action), Siek, filed Dec. 6, 2004, Non-Final Office Action mailed Apr. 26, 2007 of related application.
U.S. Appl. No. 11/031,472 (Non-Final Office Action), Teig, filed Jan. 6, 2005, Non-Final Office Action mailed Sep. 20, 2006 of related application.
International Search Report, Sep. 2006, Cadence Design Systems, Inc., International Search Report of PCT Application PCT/US2005/019361 based on U.S. Appl. No. 11/005,316, which is related to this application.
Written Opinion of the International Searching Authority, Sep. 2006, Cadence Design Systems, Inc., Written Opinion of the International Searching Authority of PCT Application PCT/US2005/019361 based on U.S. Appl. No. 11/005,316, which is related to this application.
Final Office Action of U.S. Appl. No. 11/005,169, Aug. 9, 2007 (mailing date), Malhotra, Final Office Action mailed Aug. 9, 2007 of Related Application.

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