1-D cell generation with printability enhancement

Po Hsun Wu*, Po-Hung Lin, Tung Chieh Chen, Tsung Yi Ho, Yu Chuan Chen, Shun Ren Siao, Shu Hung Lin

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

As process technologies advance to the subwavelength era, the 1-D design style is regarded as one of the most effective ways to continue scaling down the minimum feature size. To improve the printability of 1-D cell design, it is essential to insert dummy patterns and optimize line-end gap distribution for each layer. This paper presents novel 1-D cell generation algorithms that simultaneously minimize 1-D cell area and enhance the printability. Experimental results show that the proposed algorithms can effectively and efficiently reduce the number of diffusion gaps, minimize used routing tracks, insert sufficient dummy patterns, and eliminate stage-like line-end gaps without power and timing overhead. Consequently, the 1-D cell area is minimized and the printability of the cell is enhanced. To the best of our knowledge, this is also the first work in the literature that considers line-end gap distribution during 1-D cell generation.

Original languageEnglish
Article number6461981
Pages (from-to)419-432
Number of pages14
JournalIEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Volume32
Issue number3
DOIs
StatePublished - 11 Mar 2013

Keywords

  • Cell generation
  • gridded design rule
  • printability enhancement
  • transistor placement and routing

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