SEMICON West 2020 – Microtronic, maker of high-speed full-wafer macro defect inspection systems and software, has just announced an innovative new way to automatically detect and manage wafer processing defects, beginning at the source – from inside specific types of processing tools. The new capability is called "ProcessGuard Xtensis" because it extends the power of "ProcessGuard" defect management to much more process equipment in the fab. Microtronic will be giving "live" demonstrations of the new system at the virtual SEMICON West 2020 exhibition.
The core of ProcessGuard Xtensis is the company's ProcessGuard software, which is in daily use worldwide and has already processed hundreds of millions of wafers. ProcessGuard compiles a comprehensive database of wafer defect information from the subject processing tool and allows users to analyze, organize, store and retrieve the details of every wafer run through the tool – by lot, date and time. The ProcessGuard database can also integrate notes and supplemental data from other defect inspections, microscopic analyses and more. All of this information can be quickly and easily accessed by everyone in the fab.
The company pointed out the importance of PGX speed and intelligence in spotting process excursions immediately – allowing corrective actions to be taken quickly, to reduce scrap and maximize yields. The software also provides important new reliability-enhancing controls. For example, the user can ink-out a "guard-band" safety zone around certain defects to ensure that potentially marginal die do not evade final test and reach the customer. Previously, ProcessGuard capabilities had only been available with EagleView™, Microtronic's popular macro defect inspection system. Now, with the development of the Trans-Imager, the power of ProcessGuard can be extended to individual processing tools directly.
Trans-Imager can be linked to a number of different types of processing equipment, such as bonders, etchers, metal deposition, CMP and more. Some of these tools may already have internal cameras that record the processing of each wafer; however, if a particular tool does not have a built-in camera, Microtronic can install one and link it to the Trans-Imager. In addition to wafer processing equipment, the Trans-Imager can also receive images from SEMs and optical microscopes, making it much easier to organize, file, store, and retrieve microscope images.
Microtronic has stated that it will be installing ProcessGuard Xtensis capabilities on tools currently residing within fabs, and it also will be working directly with equipment manufacturers who wish to offer PGX as an option on their new processing systems.
Founded in 1994 and headquartered in Hawthorne, NY, Microtronic designs, builds and delivers advanced systems and software for automated macro wafer defect inspection and data management for semiconductor processing. The company's flagship macro defect inspection system, the EagleView 5, is known for its unprecedented speed, which enables it to automatically inspect 100% of every wafer in the lot without recipes. It produces high-resolution full-wafer color images with macro defects identified and categorized, and it stores all the information in the powerful ProcessGuard defect database and management system, which can inform all of the fab's processing steps and inspections. The database can also integrate information from other microscopic and defect inspections. This same ProcessGuard software provides the database and defect management for the company's new ProcessGuard Xtensis capability. Using the new Trans-Imager, ProcessGuard intelligence can now be extended directly to individual processing tools in the fab to provide a wealth of process-specific macro defect information.