Photolithography-tool-vendor Sigma-C con-tends that your OPC (optical-proximity-corrected) design may not be correct at all. The Munich-based vendor has expanded into the design-for-manufacturing tool market with the new Solid+ microlithogra-phy simulator that lets IC designers know whether photoresist equipment can accurately print their OPC-IC layouts. Sigma-C based the new tool on its Solid line of lithography-optimization tools. Those tools draw on a database that characterizes equipment, materials, and processes and helps lithography engineers simulate and derive manufacturing processes.
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