Patent ID: 11869784
Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G  Y | IPC G  H

Claim 4:
5. The detection method according to claim 1, wherein the first production system makes a determination by the following rule in a case “Add New Step”:
if the new step is a first step of the process route, determining whether a contamination level and a contamination flag output by the new step match a contamination level and a contamination flag input by a next process step or not; if so, determining that the process data passes the detection; or otherwise, determining that the process data does not pass the detection;
if the new step is a last step of the process route, determining whether a contamination level and a contamination flag input by the new step match a contamination level and a contamination flag output by a previous process step or not; if so, determining that the process data passes the detection; or otherwise, determining that the process data does not pass the detection; and
if the new step is neither the first nor the last step of the process route, determining whether a contamination level and a contamination flag input by the new step match a contamination level and a contamination flag output by a previous process step or not and whether the contamination level and the contamination flag output by the new step match a contamination level and a contamination flag input by a next process step or not; if so, determining that the process data passes the detection; or otherwise, determining that the process data does not pass the detection.