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Proceedings Paper

Novel customized manufacturable DFM solutions
Author(s): Mark Lu; Cong-shu Zhou; Yi Tian; Soo Muay Goh; Shyue-Fong Quek; Hein-Mun Lam; Jian Zhang
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Paper Abstract

This paper provides DFM solutions on yield improvement based on a foundry’s perspective. We have created a novel work flow for efficient yield enhancement at different stages throughout the process of design-to-silicon. In the design environment, other than conforming to the conventional design rule manual, we may guide the designer to employ the well-characterized regular logic bricks that are built from process validated hotspots. Later, after design sign-off, layout manipulation or layout retargeting are implemented during the mask preparation stage to enlarge the process window when faced with a diversity of layout patterns in the design. At the same time, two crucial methods, namely layout analysis and layout comparison, are used to capture all layout related detractors. The first method can identify the process sensitive hotspots, which will be highlighted and anchored as process limiters during the patterning process. Layout comparison can be an efficient way to narrow down the yield roadblocks by debugging the yield loss on similar process and design styles. Another smart solution is creating customized process control monitoring structures (PCM), which are extracted from previous yield ramping lessons and process hotspots. These PCMs will be dropped into scribe lane of production tapeouts and serve as pioneer testkeys for the initial production ramp up.

Paper Details

Date Published: 8 November 2012
PDF: 9 pages
Proc. SPIE 8522, Photomask Technology 2012, 852223 (8 November 2012); doi: 10.1117/12.964400
Show Author Affiliations
Mark Lu, GLOBALFOUNDRIES Singapore (Singapore)
Cong-shu Zhou, GLOBALFOUNDRIES Singapore (Singapore)
Yi Tian, GLOBALFOUNDRIES Singapore (Singapore)
Soo Muay Goh, GLOBALFOUNDRIES Singapore (Singapore)
Shyue-Fong Quek, GLOBALFOUNDRIES Singapore (Singapore)
Hein-Mun Lam, GLOBALFOUNDRIES Singapore (Singapore)
Jian Zhang, GLOBALFOUNDRIES Singapore (Singapore)

Published in SPIE Proceedings Vol. 8522:
Photomask Technology 2012
Frank E. Abboud; Thomas B. Faure, Editor(s)

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