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Effects of tool stiffness and infeed scheme on planarisation. (Integrated model for simulation of planarisation process)

Author

Listed:
  • Libo Zhou
  • Jun Shimizu
  • Hiroshi Eda

Abstract

The motivation for this work is to understand the effects of tool property and downfeed (or infeed) method on the planarisation of a patterned Si wafer. In the oxide or interlevel dielectric (ILD) planarisation process, the major concerns are the global planarity, oxide thickness differences in different regions across the chip and the remaining local step height (or height differences in oxide over the patterned features and between pattered features). By extending the MIT 'density and step' height dependent model, this paper aims to establish an analytical model to incorporate the tool stiffness and infeed scheme. A 3D simulation has also been performed to show the model validity and the effects of tool stiffness and infeed scheme on the planarity of wafer.

Suggested Citation

  • Libo Zhou & Jun Shimizu & Hiroshi Eda, 2005. "Effects of tool stiffness and infeed scheme on planarisation. (Integrated model for simulation of planarisation process)," International Journal of Manufacturing Technology and Management, Inderscience Enterprises Ltd, vol. 7(5/6), pages 490-503.
    • Handle: RePEc:ids:ijmtma:v:7:y:2005:i:5/6:p:490-503
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