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Unraveling DRAM SAQP Process Complexity With Monte Carlo Virtual Fabrication

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SemiEngineering

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AI Generated

The article discusses the complexity of the DRAM SAQP process and how small variations in mandrel and spacer dimensions can impact DRAM performance and yield. It explains the use of advanced multi-patterning schemes like Self-Aligned Quadruple Patterning (SAQP) to achieve sub-lithographic dimensions. The article highlights how the SAQP process can amplify small variations, leading to issues like line-bridge defects. The Semiverse Solutions team used Monte Carlo virtual fabrication to evaluate these interactions and define a safer SAQP process window. The study demonstrates how virtual fabrication can accelerate process development in advanced DRAM technology.

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