Cognex has acquired the wafer identification business of Siemens Dematic AG, a subsidiary of Siemens AG.
Under the terms of the agreement, Cognex acquired, for an undisclosed amount of cash, the rights to all of Siemens’ patented and unpatented wafer identification technology, as well as the related assets of their wafer identification business.
Semiconductor manufacturers use wafer identification systems to read special codes that are etched by laser on semiconductor wafers as they go through various stages of the manufacturing process. These codes enable manufacturers to automatically identify and trace wafers at every processing stage and to build a database on their processing history. This traceability is critical to making sure that manufacturing processes are optimised, and that problems are discovered and corrected.
Wafer identification has become an increasingly important tool for semiconductor manufacturers because the larger 300mm wafers are very valuable, and, therefore, the cost of a misprocessed wafer can be significant.
‘While the wafer identification business at Siemens was very successful, it was too small to get the visibility it deserved within a multi-billion dollar global corporation,’ said Dr. Peter Drexel, Member of the Managing Board of Siemens Dematic. ‘For that reason we have decided to spin it out.’
The acquisition was completed on March 31.