Modifying merged sub-resolution assist features of a...

Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design

Reexamination Certificate

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Details

C716S030000, C716S030000, C430S005000, C430S030000

Reexamination Certificate

active

07461367

ABSTRACT:
Modifying merged sub-resolution assist features includes receiving a mask pattern comprising the merged sub-resolution assist features, where a segmenting sub-resolution assist feature intersects a segmented sub-resolution assist feature at an intersection. Each sub-resolution assist feature is represented by an axis of the sub-resolution assist feature. The length of at least one axis is established, and an axis is modified in accordance with the length. Each axis is converted to a sub-resolution assist feature to yield the modified merged sub-resolution assist features.

REFERENCES:
patent: 7001693 (2006-02-01), Liebmann et al.
Heng et al., Application of Automated Design Migration to Alternating Phase shift Mask Design, Apr. 1-4, 2001, ACM, pp. 38-43.
UMC and Synopsys Develop Reference Flow for UMC's Advanced Deep Submicron Processes, Collaboration Validates Synopsys' Galaxy Design Platform for UMC's 0.13 micron Process, Synopsys, Inc., Corporate, Copyright © 2005 Synopsys, Inc., http://www.synopsys.com, 2 pages, May 3, 2004.
Mentor Graphics Calibre Approved Verification Tool for IBM-Chartered 90nm Design Enablement Platform, www.mentor.com, Copyright © 2002, Mentor Graphics Corporation, 8 pages, May 24, 2004.
TSMC and Synopsys Address Design Challenges for 90 Nanometer and Below with TSMC Reference Flow 5.0, Synopsys, Inc., Corporate, Copyright © 2005 Synopsys, Inc., http://www.synopsys.com, 3 pages, Jun. 7, 2004.
MaskTools, Products/Profile, ASML MaskTools, Copyright © 2005 ASML, www. masktools.com, 13 pages, 2005.
Hercules Physical Verification Suite (PVS) The Industry's Fastest Physical Verification Solution, Synopsys, Inc., Products & Solutions, Copyright © 2005 Synopsys, Inc., http://www.synopsys.com, 4 pages, Jan. 6, 2005.
Product Overview, K2 Technologies, Copyright © 1995-2004, Cadence Design Systems, Inc. , 37 pages, Printed 2005.
Pending Patent Application filed Apr. 26, 2005, entitled “Merging Sub-Resolution Assist Features Of A Photolithographic Mask”, 39 pages specification, claims and abstract, 3 pages of drawings, inventors Sean C. O'Brien et al.

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