Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2007-03-28
2009-06-02
Siek, Vuthe (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C716S030000, C716S030000, C716S030000, C716S030000, C716S030000, C716S030000, C716S030000, C430S005000, C430S030000
Reexamination Certificate
active
07543252
ABSTRACT:
Method, system and program product for migrating an integrated circuit (IC) layout for, for example, alternating aperture phase shift masks (AltPSM), are disclosed. In order to migrate a layout to phase compliance, jogs are identified on a first (AltPSM) layer and shifted to another second layer. Isolated or clustered jogs are shifted into an open channel portions on the second layer where possible. Remaining clustered jogs are shifted into as few new channels as possible on the second layer. The jog removal process leaves unidirectional wires that can be trivially phase colored. Standard technology migration techniques are then used to legalize the results on the layers.
REFERENCES:
patent: 5375069 (1994-12-01), Satoh et al.
patent: 6057063 (2000-05-01), Liebmann et al.
patent: 6698008 (2004-02-01), McCullen et al.
patent: 6757886 (2004-06-01), Liebmann et al.
patent: 6769106 (2004-07-01), Hasegawa
patent: 6901576 (2005-05-01), Liebmann et al.
patent: 6957414 (2005-10-01), Ludwig et al.
patent: 6986109 (2006-01-01), Allen et al.
patent: 2005/0287443 (2005-12-01), McCullen
patent: 2006/0085769 (2006-04-01), Bergeron et al.
patent: 2006/0101357 (2006-05-01), Allen et al.
Heng et al., “A VLSI Artwork Legalization Technique Based on a New Criterion of Minimum Layout Perturbation,” ACM, Inc., Napa Valley, California, 1997, pp. 116-121.
Heng et al., “Application of Automated Design Migration to Alternating Phase Shift Mask Design,” ACM, Inc., Sonoma, California, 2001, pp. 38-43.
Lin et al., “Methodology for Automated Layout Migration for 90nm ItananiumR2 Processor Design,” IEEE Computer Society, Jun. 2004, pp. 1-5.
Chiang et al., “Fast and Efficient Phase Conflict Detection and Correction in Standard-Cell Layouts,” Computer-Aided Design, Nov. 2005, pp. 1-8.
Berman et al., “Optimal Phase Conflict Removal for Layout of Dark Field Alternating Phase Shifting Masks,” International Symposium on Physical Design, 1999, pp. 121-126.
Kahng et al., “Automated Layout and Phase Assignment Techniques for Dark Field Alternating PSM,” 18th Annual BACUS Symposium, 1998, pp. 1-10.
McCullen, “Phase Correct Routing For Alternating Phase Shift Masks,” ACM, San Diego, California, Jun. 2004 , pp. 317-320.
Doan Nghia M
Hoffman Warnick LLC
International Business Machines - Corporation
Siek Vuthe
Simmons Ryan K.
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