What is the DRC Sign-off flow in UMC?
The purpose of DRC (Design Rule Check) sign-off is to verify customer’s layout to meet UMC’s design rules. Some customers adopt different libraries or embed customized blocks in their designs. In order to make sure the layout of a customer’s design is acceptable by UMC’s layout rules, UMC has come up with a DRC Sign-off flow. It was developed by DS/engineers, BG/customer engineers and Fab/PEI engineers. When a DRC violation is found in the sign-off procedure, it will be either passed to the customer through his UMC CE or reviewed by Fab PEI engineers. The DRC sign-off is an important procedure for foundry service to improve production yield and avoid potential problems caused by possible layout rule violations.
